56580066 has 16 divisors (see below), whose sum is σ = 125733600. Its totient is φ = 18860004.

The previous prime is 56580061. The next prime is 56580077. The reversal of 56580066 is 66008565.

It is a self number, because there is not a number n which added to its sum of digits gives 56580066.

It is not an unprimeable number, because it can be changed into a prime (56580061) by changing a digit.

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, 523836 + ... + 523943.

It is an arithmetic number, because the mean of its divisors is an integer number (7858350).

Almost surely, 2^56580066 is an apocalyptic number.

56580066 is an abundant number, since it is smaller than the sum of its proper divisors (69153534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56580066 is a wasteful number, since it uses less digits than its factorization.

56580066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047790 (or 1047784 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 56580066 is about 7521.9722147852. The cubic root of 56580066 is about 383.9026853012.

The spelling of 56580066 in words is "fifty-six million, five hundred eighty thousand, sixty-six".