56140686 has 48 divisors (see below), whose sum is σ = 139776000. Its totient is φ = 15952464.

The previous prime is 56140663. The next prime is 56140697. The reversal of 56140686 is 68604165.

56140686 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 56140686.

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 23 ways as a sum of consecutive naturals, for example, 23955 + ... + 26193.

It is an arithmetic number, because the mean of its divisors is an integer number (2912000).

Almost surely, 2^56140686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56140686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69888000).

56140686 is an abundant number, since it is smaller than the sum of its proper divisors (83635314).

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

56140686 is a wasteful number, since it uses less digits than its factorization.

56140686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 56140686 is about 7492.7088559479. The cubic root of 56140686 is about 382.9063527243.

The spelling of 56140686 in words is "fifty-six million, one hundred forty thousand, six hundred eighty-six".