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640

year
Intangible year Q30626
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Summary

640 is a year[1]. 640 ranks in the top 5% of year entities by monthly Wikipedia readership (150 views/month).[2]

Key Facts

  • Follows: 639[3]
  • Followed by: 641[4]
  • Part of: 640s[5]
  • Commons category: 640[6]
  • Point in time: January 1, 640[7]
  • Topic's main category: Category:640[8]
  • Has list: list of state leaders in 640[9]
  • Permanent duplicated item: Q31800699[10]
  • Category for births in this time period: Category:640 births[11]
  • Category for deaths in this time period: Category:640 deaths[12]

Why It Matters

640 has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[13] 640 is known by 25 alternative names across languages and contexts.[14]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [13] ↑ . Wikidata sitelinks. wikidata.org.
  3. [14] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). 640. Retrieved October 14, 2026, from https://4ort.xyz/entity/640
MLA “640.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/640.
BibTeX @misc{4ortxyz_640_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{640}}, year = {2026}, url = {https://4ort.xyz/entity/640}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): 640 — https://4ort.xyz/entity/640 (retrieved 2026-10-14)

Canonical URL: https://4ort.xyz/entity/640 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 17w ago · MatSuBot bot · 2026-06-15 view diff on Wikidata ↗
    Has list → list of state leaders in 640
    Point in time → —
    Follows → 639
    Followed by → 641
    + 12 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-short:0||diq, ary */ import labels from sitelinks"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.