Six thousand six hundred forty
6640 is an even number.
6640 is a Harshad number, which means it is divisible by the sum of its digits (6 + 6 + 4 + 0 = 16, and 6640 is divisible by 16).
In binary, 6640 is represented as 1100111110000.
In hex, 6640 is represented as 19f0.
Prime factorization of 6640: 24 * 5 * 83.
Factors of 6640 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3320, 6640.