Q: Is 661,789 a Prime Number?
A: No, 661,789 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 661789 can be evenly divided by 1 19 61 571 1,159 10,849 34,831 and 661,789, with no remainder.
Since 661,789 cannot be divided by just 1 and 661,789, it is not a prime number.