656432898 has 32 divisors (see below), whose sum is σ = 1433832192. Its totient is φ = 198694800.

The previous prime is 656432869. The next prime is 656432923. The reversal of 656432898 is 898234656.

It is a self number, because there is not a number n which added to its sum of digits gives 656432898.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58965 + ... + 69207.

It is an arithmetic number, because the mean of its divisors is an integer number (44807256).

Almost surely, 2^656432898 is an apocalyptic number.

656432898 is an abundant number, since it is smaller than the sum of its proper divisors (777399294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656432898 is a wasteful number, since it uses less digits than its factorization.

656432898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11230.

The product of its digits is 2488320, while the sum is 51.

The square root of 656432898 is about 25620.9464696369. The cubic root of 656432898 is about 869.0873849382.

The spelling of 656432898 in words is "six hundred fifty-six million, four hundred thirty-two thousand, eight hundred ninety-eight".