655718979 has 16 divisors (see below), whose sum is σ = 890144640. Its totient is φ = 429237120.

The previous prime is 655718957. The next prime is 655719023. The reversal of 655718979 is 979817556.

655718979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655718979 - 2⁹ = 655718467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655718939) 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, 208539 + ... + 211659.

It is an arithmetic number, because the mean of its divisors is an integer number (55634040).

Almost surely, 2^655718979 is an apocalyptic number.

655718979 is a deficient number, since it is larger than the sum of its proper divisors (234425661).

655718979 is a wasteful number, since it uses less digits than its factorization.

655718979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370.

The product of its digits is 4762800, while the sum is 57.

The square root of 655718979 is about 25607.0103487307. The cubic root of 655718979 is about 868.7722051913.

The spelling of 655718979 in words is "six hundred fifty-five million, seven hundred eighteen thousand, nine hundred seventy-nine".