56720786 has 8 divisors (see below), whose sum is σ = 85113984. Its totient is φ = 28349460.

The previous prime is 56720779. The next prime is 56720813. The reversal of 56720786 is 68702765.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5111 + ... + 11813.

It is an arithmetic number, because the mean of its divisors is an integer number (10639248).

Almost surely, 2^56720786 is an apocalyptic number.

56720786 is a deficient number, since it is larger than the sum of its proper divisors (28393198).

56720786 is a wasteful number, since it uses less digits than its factorization.

56720786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10936.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 56720786 is about 7531.3203357711. The cubic root of 56720786 is about 384.2206892960.

The spelling of 56720786 in words is "fifty-six million, seven hundred twenty thousand, seven hundred eighty-six".