656545432 has 16 divisors (see below), whose sum is σ = 1231378200. Its totient is φ = 328177920.

The previous prime is 656545403. The next prime is 656545447. The reversal of 656545432 is 234545656.

It is a happy number.

656545432 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23944 + ... + 43432.

Almost surely, 2^656545432 is an apocalyptic number.

It is an amenable number.

656545432 is a deficient number, since it is larger than the sum of its proper divisors (574832768).

656545432 is a wasteful number, since it uses less digits than its factorization.

656545432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23706 (or 23702 counting only the distinct ones).

The product of its digits is 432000, while the sum is 40.

The square root of 656545432 is about 25623.1425082873. The cubic root of 656545432 is about 869.1370454045.

The spelling of 656545432 in words is "six hundred fifty-six million, five hundred forty-five thousand, four hundred thirty-two".