640

Summary

640 is a year^[1]. 640 ranks in the top 5% of year entities by monthly Wikipedia readership (11 views/month).^[2]

Key Facts

• 640's instance of is recorded as year^[3].
• 640's follows is recorded as 639^[4].
• 640's followed by is recorded as 641^[5].
• 640's part of is recorded as 640s^[6].
• 640's Commons category is recorded as 640^[7].
• 640's point in time is recorded as +0640-01-01T00:00:00Z^[8].
• 640's topic's main category is recorded as Category:640^[9].
• 640's has list is recorded as list of state leaders in 640^[10].
• 640's permanent duplicated item is recorded as Q31800699^[11].
• 640's Cathopedia article ID is recorded as 640^[12].
• 640's category for births in this time period is recorded as Category:640 births^[13].
• 640's category for deaths in this time period is recorded as Category:640 deaths^[14].

Why It Matters

640 ranks in the top 5% of year entities by monthly Wikipedia readership (11 views/month).^[2] 640 has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.^[15] 640 is known by 19 alternative names across languages and contexts.^[16]