Q: Is 680,561 a Prime Number?
A: No, 680,561 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 680561 can be evenly divided by 1 7 17 19 43 49 119 133 301 323 731 817 833 931 2,107 2,261 5,117 5,719 13,889 15,827 35,819 40,033 97,223 and 680,561, with no remainder.
Since 680,561 cannot be divided by just 1 and 680,561, it is not a prime number.