656474244 has 48 divisors (see below), whose sum is σ = 1707249600. Its totient is φ = 195111936.

The previous prime is 656474243. The next prime is 656474309. The reversal of 656474244 is 442474656.

It is a junction number, because it is equal to n+sod(n) for n = 656474196 and 656474205.

It is not an unprimeable number, because it can be changed into a prime (656474243) 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, 80809 + ... + 88560.

It is an arithmetic number, because the mean of its divisors is an integer number (35567700).

Almost surely, 2^656474244 is an apocalyptic number.

It is an amenable number.

656474244 is an abundant number, since it is smaller than the sum of its proper divisors (1050775356).

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

656474244 is a wasteful number, since it uses less digits than its factorization.

656474244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169412 (or 169410 counting only the distinct ones).

The product of its digits is 645120, while the sum is 42.

The square root of 656474244 is about 25621.7533357887. The cubic root of 656474244 is about 869.1056312980.

It can be divided in two parts, 6564 and 74244, that added together give a palindrome (80808).

The spelling of 656474244 in words is "six hundred fifty-six million, four hundred seventy-four thousand, two hundred forty-four".