Q: Is 665,677 a Prime Number?
A: Yes, 665,677 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 665677 can be evenly divided by 1 and 665,677, with no remainder.
Since 665,677 can be divided by just 1 and 665,677, it is a prime number.