55665684 has 48 divisors (see below), whose sum is σ = 152812800. Its totient is φ = 17463168.

The previous prime is 55665671. The next prime is 55665689. The reversal of 55665684 is 48656655.

It is a happy number.

55665684 is a `hidden beast` number, since 5 + 566 + 5 + 6 + 84 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13324 + ... + 16995.

It is an arithmetic number, because the mean of its divisors is an integer number (3183600).

Almost surely, 2^55665684 is an apocalyptic number.

55665684 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55665684 is an abundant number, since it is smaller than the sum of its proper divisors (97147116).

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

55665684 is a wasteful number, since it uses less digits than its factorization.

55665684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30349 (or 30341 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The square root of 55665684 is about 7460.9439081124. The cubic root of 55665684 is about 381.8233789645.

The spelling of 55665684 in words is "fifty-five million, six hundred sixty-five thousand, six hundred eighty-four".