56390670 has 144 divisors (see below), whose sum is σ = 179796240. Its totient is φ = 12192768.

The previous prime is 56390639. The next prime is 56390699. The reversal of 56390670 is 7609365.

It is a happy number.

56390670 is a `hidden beast` number, since 563 + 90 + 6 + 7 + 0 = 666.

56390670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 83454 + ... + 84126.

It is an arithmetic number, because the mean of its divisors is an integer number (1248585).

Almost surely, 2^56390670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56390670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89898120).

56390670 is an abundant number, since it is smaller than the sum of its proper divisors (123405570).

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

56390670 is a wasteful number, since it uses less digits than its factorization.

56390670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 56390670 is about 7509.3721441942. The cubic root of 56390670 is about 383.4738480875.

The spelling of 56390670 in words is "fifty-six million, three hundred ninety thousand, six hundred seventy".