Q: Is 815,604 a Prime Number?
A: No, 815,604 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 815604 can be evenly divided by 1 2 3 4 6 12 67,967 135,934 203,901 271,868 407,802 and 815,604, with no remainder.
Since 815,604 cannot be divided by just 1 and 815,604, it is not a prime number.