Q: Is 680,636 a Prime Number?
A: No, 680,636 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 680636 can be evenly divided by 1 2 4 11 22 31 44 62 124 341 499 682 998 1,364 1,996 5,489 10,978 15,469 21,956 30,938 61,876 170,159 340,318 and 680,636, with no remainder.
Since 680,636 cannot be divided by just 1 and 680,636, it is not a prime number.