+**663** is a [natural number](/wiki/Natural_number) that follows 662 and precedes 664. As a [composite number](/wiki/Composite_number), its prime factors include 3, 13, and 17, and it also refers to a specific [year](/wiki/Year) in the common era.
+## See also
+- [Integer](/wiki/Integer)
+- [Number Theory](/wiki/Number_Theory)
+- [Divisibility](/wiki/Divisibility)
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