Q: Is 637,646 a Prime Number?
A: No, 637,646 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 637646 can be evenly divided by 1 2 318,823 and 637,646, with no remainder.
Since 637,646 cannot be divided by just 1 and 637,646, it is not a prime number.