56620871 has 8 divisors (see below), whose sum is σ = 60052704. Its totient is φ = 53269920.

The previous prime is 56620807. The next prime is 56620891. The reversal of 56620871 is 17802665.

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

It is a cyclic number.

It is not a de Polignac number, because 56620871 - 2⁶ = 56620807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56620891) 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 7 ways as a sum of consecutive naturals, for example, 18776 + ... + 21581.

It is an arithmetic number, because the mean of its divisors is an integer number (7506588).

Almost surely, 2^56620871 is an apocalyptic number.

56620871 is a deficient number, since it is larger than the sum of its proper divisors (3431833).

56620871 is a wasteful number, since it uses less digits than its factorization.

56620871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40441.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 56620871 is about 7524.6841129711. The cubic root of 56620871 is about 383.9949521002.

The spelling of 56620871 in words is "fifty-six million, six hundred twenty thousand, eight hundred seventy-one".