656173048 has 32 divisors (see below), whose sum is σ = 1241100000. Its totient is φ = 325226880.

The previous prime is 656173039. The next prime is 656173073. The reversal of 656173048 is 840371656.

It is a happy number.

It is a super-2 number, since 2×656173048² = 861126137843220608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 656173048.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555018 + ... + 556198.

It is an arithmetic number, because the mean of its divisors is an integer number (38784375).

Almost surely, 2^656173048 is an apocalyptic number.

It is an amenable number.

656173048 is a deficient number, since it is larger than the sum of its proper divisors (584926952).

656173048 is a wasteful number, since it uses less digits than its factorization.

656173048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 656173048 is about 25615.8749216184. The cubic root of 656173048 is about 868.9726932650.

The spelling of 656173048 in words is "six hundred fifty-six million, one hundred seventy-three thousand, forty-eight".