Q: Is 667,684 a Prime Number?
A: No, 667,684 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 667684 can be evenly divided by 1 2 4 71 142 284 2,351 4,702 9,404 166,921 333,842 and 667,684, with no remainder.
Since 667,684 cannot be divided by just 1 and 667,684, it is not a prime number.