56000666 has 16 divisors (see below), whose sum is σ = 85127328. Its totient is φ = 27627600.

The previous prime is 56000639. The next prime is 56000671. The reversal of 56000666 is 66600065.

56000666 is a modest number, since divided by 666 gives 56 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54776 + ... + 55788.

It is an arithmetic number, because the mean of its divisors is an integer number (5320458).

Almost surely, 2^56000666 is an apocalyptic number.

56000666 is a deficient number, since it is larger than the sum of its proper divisors (29126662).

56000666 is a wasteful number, since it uses less digits than its factorization.

56000666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 56000666 is about 7483.3592724124. The cubic root of 56000666 is about 382.5877532296.

The spelling of 56000666 in words is "fifty-six million, six hundred sixty-six", and thus it is an aban number.