56639016 has 96 divisors (see below), whose sum is σ = 177091200. Its totient is φ = 16018560.

The previous prime is 56638993. The next prime is 56639017. The reversal of 56639016 is 61093665.

56639016 is a `hidden beast` number, since 5 + 6 + 639 + 0 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (56639017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54421 + ... + 55451.

It is an arithmetic number, because the mean of its divisors is an integer number (1844700).

Almost surely, 2^56639016 is an apocalyptic number.

56639016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56639016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88545600).

56639016 is an abundant number, since it is smaller than the sum of its proper divisors (120452184).

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

56639016 is a wasteful number, since it uses less digits than its factorization.

56639016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 56639016 is about 7525.8897148444. The cubic root of 56639016 is about 384.0359666832.

The spelling of 56639016 in words is "fifty-six million, six hundred thirty-nine thousand, sixteen".