56665011 has 16 divisors (see below), whose sum is σ = 85648640. Its totient is φ = 33035040.

The previous prime is 56664997. The next prime is 56665027. The reversal of 56665011 is 11056665.

56665011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56665011 - 2⁶ = 56664947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56665011.

It is not an unprimeable number, because it can be changed into a prime (56665061) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 37495 + ... + 38976.

It is an arithmetic number, because the mean of its divisors is an integer number (5353040).

Almost surely, 2^56665011 is an apocalyptic number.

56665011 is a deficient number, since it is larger than the sum of its proper divisors (28983629).

56665011 is a wasteful number, since it uses less digits than its factorization.

56665011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76506.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 56665011 is about 7527.6165550591. The cubic root of 56665011 is about 384.0947099829.

The spelling of 56665011 in words is "fifty-six million, six hundred sixty-five thousand, eleven".