56649586 has 48 divisors (see below), whose sum is σ = 105719040. Its totient is φ = 22649760.

The previous prime is 56649581. The next prime is 56649599. The reversal of 56649586 is 68594665.

It is a happy number.

56649586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (56649581) by changing a digit.

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, 87781 + ... + 88423.

It is an arithmetic number, because the mean of its divisors is an integer number (2202480).

Almost surely, 2^56649586 is an apocalyptic number.

56649586 is a deficient number, since it is larger than the sum of its proper divisors (49069454).

56649586 is a wasteful number, since it uses less digits than its factorization.

56649586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 712 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The square root of 56649586 is about 7526.5919246363. The cubic root of 56649586 is about 384.0598548553.

The spelling of 56649586 in words is "fifty-six million, six hundred forty-nine thousand, five hundred eighty-six".