55664316 has 18 divisors (see below), whose sum is σ = 140707112. Its totient is φ = 18554760.

The previous prime is 55664303. The next prime is 55664321. The reversal of 55664316 is 61346655.

55664316 is a `hidden beast` number, since 5 + 5 + 6 + 643 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×55664316³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1546231 = 55664316 / (5 + 5 + 6 + 6 + 4 + 3 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 773080 + ... + 773151.

Almost surely, 2^55664316 is an apocalyptic number.

It is an amenable number.

55664316 is an abundant number, since it is smaller than the sum of its proper divisors (85042796).

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

55664316 is a wasteful number, since it uses less digits than its factorization.

55664316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546241 (or 1546236 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 55664316 is about 7460.8522301410. The cubic root of 55664316 is about 381.8202511329.

The spelling of 55664316 in words is "fifty-five million, six hundred sixty-four thousand, three hundred sixteen".