55611668 has 36 divisors (see below), whose sum is σ = 113954400. Its totient is φ = 23676912.

The previous prime is 55611667. The next prime is 55611671. The reversal of 55611668 is 86611655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55611667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31883 + ... + 33581.

It is an arithmetic number, because the mean of its divisors is an integer number (3165400).

Almost surely, 2^55611668 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 55611668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56977200).

55611668 is an abundant number, since it is smaller than the sum of its proper divisors (58342732).

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

55611668 is a wasteful number, since it uses less digits than its factorization.

55611668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884 (or 1875 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 55611668 is about 7457.3231122166. The cubic root of 55611668 is about 381.6998363863.

The spelling of 55611668 in words is "fifty-five million, six hundred eleven thousand, six hundred sixty-eight".