Q: Is 623,708 a Prime Number?
A: No, 623,708 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 623708 can be evenly divided by 1 2 4 241 482 647 964 1,294 2,588 155,927 311,854 and 623,708, with no remainder.
Since 623,708 cannot be divided by just 1 and 623,708, it is not a prime number.