56685340 has 24 divisors (see below), whose sum is σ = 124215840. Its totient is φ = 21688128.

The previous prime is 56685331. The next prime is 56685347. The reversal of 56685340 is 4358665.

56685340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 56685340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56685347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61155 + ... + 62074.

It is an arithmetic number, because the mean of its divisors is an integer number (5175660).

Almost surely, 2^56685340 is an apocalyptic number.

It is an amenable number.

56685340 is an abundant number, since it is smaller than the sum of its proper divisors (67530500).

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

56685340 is a wasteful number, since it uses less digits than its factorization.

56685340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123261 (or 123259 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 56685340 is about 7528.9667285757. The cubic root of 56685340 is about 384.1406367824.

The spelling of 56685340 in words is "fifty-six million, six hundred eighty-five thousand, three hundred forty".