Q: Is 820,604 a Prime Number?
A: No, 820,604 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 820604 can be evenly divided by 1 2 4 205,151 410,302 and 820,604, with no remainder.
Since 820,604 cannot be divided by just 1 and 820,604, it is not a prime number.