55683666 has 32 divisors (see below), whose sum is σ = 124579200. Its totient is φ = 18435600.

The previous prime is 55683647. The next prime is 55683671. The reversal of 55683666 is 66638655.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4740 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (3893100).

Almost surely, 2^55683666 is an apocalyptic number.

55683666 is an abundant number, since it is smaller than the sum of its proper divisors (68895534).

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

55683666 is a wasteful number, since it uses less digits than its factorization.

55683666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991 (or 6985 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 55683666 is about 7462.1488862123. The cubic root of 55683666 is about 381.8644887250.

The spelling of 55683666 in words is "fifty-five million, six hundred eighty-three thousand, six hundred sixty-six".