656462879 has 8 divisors (see below), whose sum is σ = 679635360. Its totient is φ = 633326176.

The previous prime is 656462839. The next prime is 656462887. The reversal of 656462879 is 978264656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656462879 - 2⁸ = 656462623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656462879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656462819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31574 + ... + 48060.

It is an arithmetic number, because the mean of its divisors is an integer number (84954420).

Almost surely, 2^656462879 is an apocalyptic number.

656462879 is a deficient number, since it is larger than the sum of its proper divisors (23172481).

656462879 is a wasteful number, since it uses less digits than its factorization.

656462879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17889.

The product of its digits is 4354560, while the sum is 53.

The square root of 656462879 is about 25621.5315506314. The cubic root of 656462879 is about 869.1006158982.

The spelling of 656462879 in words is "six hundred fifty-six million, four hundred sixty-two thousand, eight hundred seventy-nine".