Q: Is 680,440 a Prime Number?
A: No, 680,440 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 680440 can be evenly divided by 1 2 4 5 8 10 20 40 17,011 34,022 68,044 85,055 136,088 170,110 340,220 and 680,440, with no remainder.
Since 680,440 cannot be divided by just 1 and 680,440, it is not a prime number.