56000661 has 8 divisors (see below), whose sum is σ = 74866080. Its totient is φ = 37234512.

The previous prime is 56000639. The next prime is 56000671. The reversal of 56000661 is 16600065.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56000661 - 2⁶ = 56000597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56000621) by changing a digit.

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, 23490 + ... + 25763.

It is an arithmetic number, because the mean of its divisors is an integer number (9358260).

Almost surely, 2^56000661 is an apocalyptic number.

It is an amenable number.

56000661 is a deficient number, since it is larger than the sum of its proper divisors (18865419).

56000661 is a wasteful number, since it uses less digits than its factorization.

56000661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49635.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 56000661 is about 7483.3589383378. The cubic root of 56000661 is about 382.5877418432.

The spelling of 56000661 in words is "fifty-six million, six hundred sixty-one", and thus it is an aban number.