Q: Is 1,663,693 a Prime Number?
A: Yes, 1,663,693 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1663693 can be evenly divided by 1 and 1,663,693, with no remainder.
Since 1,663,693 can be divided by just 1 and 1,663,693, it is a prime number.