55613668 has 12 divisors (see below), whose sum is σ = 106171632. Its totient is φ = 25278920.

The previous prime is 55613651. The next prime is 55613683. The reversal of 55613668 is 86631655.

It is a self number, because there is not a number n which added to its sum of digits gives 55613668.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 631930 + ... + 632017.

It is an arithmetic number, because the mean of its divisors is an integer number (8847636).

Almost surely, 2^55613668 is an apocalyptic number.

It is an amenable number.

55613668 is a deficient number, since it is larger than the sum of its proper divisors (50557964).

55613668 is a wasteful number, since it uses less digits than its factorization.

55613668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263962 (or 1263960 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 55613668 is about 7457.4572073864. The cubic root of 55613668 is about 381.7044121079.

It can be divided in two parts, 5561 and 3668, that added together give a palindrome (9229).

The spelling of 55613668 in words is "fifty-five million, six hundred thirteen thousand, six hundred sixty-eight".