Q: Is 664,624 a Prime Number?
A: No, 664,624 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 664624 can be evenly divided by 1 2 4 8 16 41,539 83,078 166,156 332,312 and 664,624, with no remainder.
Since 664,624 cannot be divided by just 1 and 664,624, it is not a prime number.