656790048 has 36 divisors (see below), whose sum is σ = 1867747518. Its totient is φ = 218929920.

The previous prime is 656790037. The next prime is 656790049. The reversal of 656790048 is 840097656.

It can be written as a sum of positive squares in only one way, i.e., 653927184 + 2862864 = 25572^2 + 1692^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 656789985 and 656790012.

It is not an unprimeable number, because it can be changed into a prime (656790049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1139973 + ... + 1140548.

Almost surely, 2^656790048 is an apocalyptic number.

It is an amenable number.

656790048 is an abundant number, since it is smaller than the sum of its proper divisors (1210957470).

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

656790048 is a wasteful number, since it uses less digits than its factorization.

656790048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280537 (or 2280526 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 656790048 is about 25627.9154048861. The cubic root of 656790048 is about 869.2449731622.

The spelling of 656790048 in words is "six hundred fifty-six million, seven hundred ninety thousand, forty-eight".