Q: Is 680,691 a Prime Number?
A: No, 680,691 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 680691 can be evenly divided by 1 3 11 33 20,627 61,881 226,897 and 680,691, with no remainder.
Since 680,691 cannot be divided by just 1 and 680,691, it is not a prime number.