Q: Is 999,660 a Prime Number?
A: No, 999,660 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 999660 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 16,661 33,322 49,983 66,644 83,305 99,966 166,610 199,932 249,915 333,220 499,830 and 999,660, with no remainder.
Since 999,660 cannot be divided by just 1 and 999,660, it is not a prime number.