Q: Is 666,804 a Prime Number?
A: No, 666,804 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 666804 can be evenly divided by 1 2 3 4 6 12 181 307 362 543 614 724 921 1,086 1,228 1,842 2,172 3,684 55,567 111,134 166,701 222,268 333,402 and 666,804, with no remainder.
Since 666,804 cannot be divided by just 1 and 666,804, it is not a prime number.