6655979 has 16 divisors (see below), whose sum is σ = 7603200. Its totient is φ = 5772000.

The previous prime is 6655951. The next prime is 6655997. The reversal of 6655979 is 9795566.

It is a cyclic number.

It is not a de Polignac number, because 6655979 - 2⁸ = 6655723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6655919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44597 + ... + 44745.

It is an arithmetic number, because the mean of its divisors is an integer number (475200).

Almost surely, 2^6655979 is an apocalyptic number.

6655979 is a deficient number, since it is larger than the sum of its proper divisors (947221).

6655979 is a wasteful number, since it uses less digits than its factorization.

6655979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its digits is 510300, while the sum is 47.

The square root of 6655979 is about 2579.9184095626. The cubic root of 6655979 is about 188.1065771888.

The spelling of 6655979 in words is "six million, six hundred fifty-five thousand, nine hundred seventy-nine".