56855670 has 16 divisors (see below), whose sum is σ = 136453680. Its totient is φ = 15161504.

The previous prime is 56855663. The next prime is 56855671. The reversal of 56855670 is 7655865.

It is a super-2 number, since 2×56855670² = 6465134422297800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56855671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947565 + ... + 947624.

It is an arithmetic number, because the mean of its divisors is an integer number (8528355).

Almost surely, 2^56855670 is an apocalyptic number.

56855670 is an abundant number, since it is smaller than the sum of its proper divisors (79598010).

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

56855670 is a wasteful number, since it uses less digits than its factorization.

56855670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895199.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 56855670 is about 7540.2698890690. The cubic root of 56855670 is about 384.5250115770.

The spelling of 56855670 in words is "fifty-six million, eight hundred fifty-five thousand, six hundred seventy".