Q: Is 687,208 a Prime Number?
A: No, 687,208 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 687208 can be evenly divided by 1 2 4 8 17 31 34 62 68 124 136 163 248 326 527 652 1,054 1,304 2,108 2,771 4,216 5,053 5,542 10,106 11,084 20,212 22,168 40,424 85,901 171,802 343,604 and 687,208, with no remainder.
Since 687,208 cannot be divided by just 1 and 687,208, it is not a prime number.