56665976 has 8 divisors (see below), whose sum is σ = 106248720. Its totient is φ = 28332984.

The previous prime is 56665943. The next prime is 56665993. The reversal of 56665976 is 67956665.

56665976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×56665976² = 6422065672065152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3541616 + ... + 3541631.

It is an arithmetic number, because the mean of its divisors is an integer number (13281090).

Almost surely, 2^56665976 is an apocalyptic number.

It is an amenable number.

56665976 is a deficient number, since it is larger than the sum of its proper divisors (49582744).

56665976 is a wasteful number, since it uses less digits than its factorization.

56665976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083253 (or 7083249 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 50.

The square root of 56665976 is about 7527.6806521000. The cubic root of 56665976 is about 384.0968903366.

The spelling of 56665976 in words is "fifty-six million, six hundred sixty-five thousand, nine hundred seventy-six".