656945058 has 144 divisors (see below), whose sum is σ = 1713912480. Its totient is φ = 167207040.

The previous prime is 656945057. The next prime is 656945063. The reversal of 656945058 is 850549656.

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

It is a junction number, because it is equal to n+sod(n) for n = 656944998 and 656945016.

It is not an unprimeable number, because it can be changed into a prime (656945057) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2098710 + ... + 2099022.

It is an arithmetic number, because the mean of its divisors is an integer number (11902170).

Almost surely, 2^656945058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656945058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856956240).

656945058 is an abundant number, since it is smaller than the sum of its proper divisors (1056967422).

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

656945058 is a wasteful number, since it uses less digits than its factorization.

656945058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 656945058 is about 25630.9394677604. The cubic root of 656945058 is about 869.3133517178.

The spelling of 656945058 in words is "six hundred fifty-six million, nine hundred forty-five thousand, fifty-eight".