56645616 has 20 divisors (see below), whose sum is σ = 146334632. Its totient is φ = 18881856.

The previous prime is 56645609. The next prime is 56645621. The reversal of 56645616 is 61654665.

56645616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 13.

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 3 ways as a sum of consecutive naturals, for example, 590011 + ... + 590106.

Almost surely, 2^56645616 is an apocalyptic number.

It is an amenable number.

56645616 is an abundant number, since it is smaller than the sum of its proper divisors (89689016).

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

56645616 is a wasteful number, since it uses less digits than its factorization.

56645616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180128 (or 1180122 counting only the distinct ones).

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

The square root of 56645616 is about 7526.3281884329. The cubic root of 56645616 is about 384.0508830142.

The spelling of 56645616 in words is "fifty-six million, six hundred forty-five thousand, six hundred sixteen".