55868616 has 96 divisors (see below), whose sum is σ = 162489600. Its totient is φ = 17962560.

The previous prime is 55868591. The next prime is 55868623. The reversal of 55868616 is 61686855.

55868616 is a `hidden beast` number, since 5 + 586 + 8 + 61 + 6 = 666.

55868616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 55881 + ... + 56871.

It is an arithmetic number, because the mean of its divisors is an integer number (1692600).

Almost surely, 2^55868616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55868616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81244800).

55868616 is an abundant number, since it is smaller than the sum of its proper divisors (106620984).

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

55868616 is a wasteful number, since it uses less digits than its factorization.

55868616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1025 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 55868616 is about 7474.5311558652. The cubic root of 55868616 is about 382.2868016045.

The spelling of 55868616 in words is "fifty-five million, eight hundred sixty-eight thousand, six hundred sixteen".