Q: Is 690 a Prime Number?
A: No, 690 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 690 can be evenly divided by 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 and 690, with no remainder.
Since 690 cannot be divided by just 1 and 690, it is not a prime number.