56972066 has 16 divisors (see below), whose sum is σ = 93606840. Its totient is φ = 25885440.

The previous prime is 56972063. The next prime is 56972099. The reversal of 56972066 is 66027965.

It can be written as a sum of positive squares in 4 ways, for example, as 56685841 + 286225 = 7529^2 + 535^2 .

It is not an unprimeable number, because it can be changed into a prime (56972063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27905 + ... + 29876.

Almost surely, 2^56972066 is an apocalyptic number.

56972066 is a deficient number, since it is larger than the sum of its proper divisors (36634774).

56972066 is a wasteful number, since it uses less digits than its factorization.

56972066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57829.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 56972066 is about 7547.9842342178. The cubic root of 56972066 is about 384.7872350008.

The spelling of 56972066 in words is "fifty-six million, nine hundred seventy-two thousand, sixty-six".