56686842 has 48 divisors (see below), whose sum is σ = 130908960. Its totient is φ = 17676576.

The previous prime is 56686829. The next prime is 56686843. The reversal of 56686842 is 24868665.

56686842 is a `hidden beast` number, since 566 + 8 + 6 + 84 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (56686843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27388 + ... + 29384.

It is an arithmetic number, because the mean of its divisors is an integer number (2727270).

Almost surely, 2^56686842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56686842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65454480).

56686842 is an abundant number, since it is smaller than the sum of its proper divisors (74222118).

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

56686842 is a wasteful number, since it uses less digits than its factorization.

56686842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2104 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 56686842 is about 7529.0664759982. The cubic root of 56686842 is about 384.1440296299.

The spelling of 56686842 in words is "fifty-six million, six hundred eighty-six thousand, eight hundred forty-two".