Q: Is 8,625,721 a Prime Number?
A: No, 8,625,721 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 8625721 can be evenly divided by 1 13 663,517 and 8,625,721, with no remainder.
Since 8,625,721 cannot be divided by just 1 and 8,625,721, it is not a prime number.