56686530 has 16 divisors (see below), whose sum is σ = 136047744. Its totient is φ = 15116400.

The previous prime is 56686501. The next prime is 56686537. The reversal of 56686530 is 3568665.

It is not an unprimeable number, because it can be changed into a prime (56686537) 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, 944746 + ... + 944805.

It is an arithmetic number, because the mean of its divisors is an integer number (8502984).

Almost surely, 2^56686530 is an apocalyptic number.

56686530 is an abundant number, since it is smaller than the sum of its proper divisors (79361214).

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

56686530 is a wasteful number, since it uses less digits than its factorization.

56686530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889561.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 56686530 is about 7529.0457562695. The cubic root of 56686530 is about 384.1433248622.

Subtracting from 56686530 its product of nonzero digits (129600), we obtain a triangular number (56556930 = T₁₀₆₃₅).

The spelling of 56686530 in words is "fifty-six million, six hundred eighty-six thousand, five hundred thirty".