Q: Is 667,631 a Prime Number?
A: Yes, 667,631 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 667631 can be evenly divided by 1 and 667,631, with no remainder.
Since 667,631 can be divided by just 1 and 667,631, it is a prime number.