Q: Is 678,504 a Prime Number?
A: No, 678,504 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 678504 can be evenly divided by 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 1,663 3,326 4,989 6,652 9,978 13,304 19,956 28,271 39,912 56,542 84,813 113,084 169,626 226,168 339,252 and 678,504, with no remainder.
Since 678,504 cannot be divided by just 1 and 678,504, it is not a prime number.