55668384 has 72 divisors (see below), whose sum is σ = 164193120. Its totient is φ = 18553536.

The previous prime is 55668373. The next prime is 55668419. The reversal of 55668384 is 48386655.

55668384 is a `hidden beast` number, since 5 + 566 + 8 + 3 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4197 + ... + 11355.

It is an arithmetic number, because the mean of its divisors is an integer number (2280460).

Almost surely, 2^55668384 is an apocalyptic number.

55668384 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55668384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82096560).

55668384 is an abundant number, since it is smaller than the sum of its proper divisors (108524736).

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

55668384 is an equidigital number, since it uses as much as digits as its factorization.

55668384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184 (or 7164 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 55668384 is about 7461.1248481714. The cubic root of 55668384 is about 381.8295521660.

The spelling of 55668384 in words is "fifty-five million, six hundred sixty-eight thousand, three hundred eighty-four".