Q: Is 636,904 a Prime Number?
A: No, 636,904 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 636904 can be evenly divided by 1 2 4 8 79,613 159,226 318,452 and 636,904, with no remainder.
Since 636,904 cannot be divided by just 1 and 636,904, it is not a prime number.