56616444 has 18 divisors (see below), whose sum is σ = 143113880. Its totient is φ = 18872136.

The previous prime is 56616433. The next prime is 56616451. The reversal of 56616444 is 44461665.

56616444 is a `hidden beast` number, since 5 + 6 + 6 + 1 + 644 + 4 = 666.

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

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: 1572679 = 56616444 / (5 + 6 + 6 + 1 + 6 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 56616399 and 56616408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786304 + ... + 786375.

Almost surely, 2^56616444 is an apocalyptic number.

It is an amenable number.

56616444 is an abundant number, since it is smaller than the sum of its proper divisors (86497436).

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

56616444 is a wasteful number, since it uses less digits than its factorization.

56616444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572689 (or 1572684 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 56616444 is about 7524.3899420485. The cubic root of 56616444 is about 383.9849440712.

The spelling of 56616444 in words is "fifty-six million, six hundred sixteen thousand, four hundred forty-four".