56606665 has 16 divisors (see below), whose sum is σ = 69413760. Its totient is φ = 44302720.

The previous prime is 56606663. The next prime is 56606689. The reversal of 56606665 is 56660665.

It is a happy number.

It is not a de Polignac number, because 56606665 - 2¹ = 56606663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56606663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91437 + ... + 92053.

It is an arithmetic number, because the mean of its divisors is an integer number (4338360).

Almost surely, 2^56606665 is an apocalyptic number.

It is an amenable number.

56606665 is a deficient number, since it is larger than the sum of its proper divisors (12807095).

56606665 is a wasteful number, since it uses less digits than its factorization.

56606665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 56606665 is about 7523.7400938629. The cubic root of 56606665 is about 383.9628350352.

The spelling of 56606665 in words is "fifty-six million, six hundred six thousand, six hundred sixty-five".