Q: Is 1,366,660 a Prime Number?
A: No, 1,366,660 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 1366660 can be evenly divided by 1 2 4 5 10 20 23 46 92 115 230 460 2,971 5,942 11,884 14,855 29,710 59,420 68,333 136,666 273,332 341,665 683,330 and 1,366,660, with no remainder.
Since 1,366,660 cannot be divided by just 1 and 1,366,660, it is not a prime number.