Q: Is 491,636 a Prime Number?
A: No, 491,636 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 491636 can be evenly divided by 1 2 4 89 178 356 1,381 2,762 5,524 122,909 245,818 and 491,636, with no remainder.
Since 491,636 cannot be divided by just 1 and 491,636, it is not a prime number.