56866540 has 12 divisors (see below), whose sum is σ = 119419776. Its totient is φ = 22746608.

The previous prime is 56866529. The next prime is 56866543. The reversal of 56866540 is 4566865.

It is a junction number, because it is equal to n+sod(n) for n = 56866493 and 56866502.

It is not an unprimeable number, because it can be changed into a prime (56866543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421644 + ... + 1421683.

It is an arithmetic number, because the mean of its divisors is an integer number (9951648).

Almost surely, 2^56866540 is an apocalyptic number.

It is an amenable number.

56866540 is an abundant number, since it is smaller than the sum of its proper divisors (62553236).

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

56866540 is a wasteful number, since it uses less digits than its factorization.

56866540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843336 (or 2843334 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 56866540 is about 7540.9906511015. The cubic root of 56866540 is about 384.5495152634.

The spelling of 56866540 in words is "fifty-six million, eight hundred sixty-six thousand, five hundred forty".