Q: Is 691,506 a Prime Number?
A: No, 691,506 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 691506 can be evenly divided by 1 2 3 6 9 18 41 82 123 246 369 738 937 1,874 2,811 5,622 8,433 16,866 38,417 76,834 115,251 230,502 345,753 and 691,506, with no remainder.
Since 691,506 cannot be divided by just 1 and 691,506, it is not a prime number.