Q: Is 627,644 a Prime Number?
A: No, 627,644 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 627644 can be evenly divided by 1 2 4 173 346 692 907 1,814 3,628 156,911 313,822 and 627,644, with no remainder.
Since 627,644 cannot be divided by just 1 and 627,644, it is not a prime number.