656434797 has 16 divisors (see below), whose sum is σ = 902438592. Its totient is φ = 424120320.

The previous prime is 656434769. The next prime is 656434813. The reversal of 656434797 is 797434656.

It is not a de Polignac number, because 656434797 - 2²⁸ = 387999341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656434747) 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, 17022 + ... + 40032.

It is an arithmetic number, because the mean of its divisors is an integer number (56402412).

Almost surely, 2^656434797 is an apocalyptic number.

It is an amenable number.

656434797 is a deficient number, since it is larger than the sum of its proper divisors (246003795).

656434797 is a wasteful number, since it uses less digits than its factorization.

656434797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23308.

The product of its digits is 3810240, while the sum is 51.

The square root of 656434797 is about 25620.9835291310. The cubic root of 656434797 is about 869.0882230007.

It can be divided in two parts, 656434 and 797, that added together give a triangular number (657231 = T₁₁₄₆).

The spelling of 656434797 in words is "six hundred fifty-six million, four hundred thirty-four thousand, seven hundred ninety-seven".