Q: Is 636,980 a Prime Number?
A: No, 636,980 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 636980 can be evenly divided by 1 2 4 5 10 20 31,849 63,698 127,396 159,245 318,490 and 636,980, with no remainder.
Since 636,980 cannot be divided by just 1 and 636,980, it is not a prime number.