56408766 has 16 divisors (see below), whose sum is σ = 113249664. Its totient is φ = 18730904.

The previous prime is 56408761. The next prime is 56408773. The reversal of 56408766 is 66780465.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56408761) 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, 16296 + ... + 19451.

It is an arithmetic number, because the mean of its divisors is an integer number (7078104).

Almost surely, 2^56408766 is an apocalyptic number.

56408766 is an abundant number, since it is smaller than the sum of its proper divisors (56840898).

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

56408766 is a wasteful number, since it uses less digits than its factorization.

56408766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36015.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 56408766 is about 7510.5769418867. The cubic root of 56408766 is about 383.5148631502.

The spelling of 56408766 in words is "fifty-six million, four hundred eight thousand, seven hundred sixty-six".