Q: Is 669,666 a Prime Number?
A: No, 669,666 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 669666 can be evenly divided by 1 2 3 6 111,611 223,222 334,833 and 669,666, with no remainder.
Since 669,666 cannot be divided by just 1 and 669,666, it is not a prime number.