Q: Is 636,626 a Prime Number?
A: No, 636,626 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 636626 can be evenly divided by 1 2 318,313 and 636,626, with no remainder.
Since 636,626 cannot be divided by just 1 and 636,626, it is not a prime number.