57616812 has 72 divisors (see below), whose sum is σ = 164228400. Its totient is φ = 17455680.

The previous prime is 57616747. The next prime is 57616843. The reversal of 57616812 is 21861675.

57616812 is a `hidden beast` number, since 576 + 1 + 6 + 81 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10864 + ... + 15272.

It is an arithmetic number, because the mean of its divisors is an integer number (2280950).

Almost surely, 2^57616812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57616812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82114200).

57616812 is an abundant number, since it is smaller than the sum of its proper divisors (106611588).

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

57616812 is a wasteful number, since it uses less digits than its factorization.

57616812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444 (or 4425 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 57616812 is about 7590.5738913471. The cubic root of 57616812 is about 386.2333238158.

The spelling of 57616812 in words is "fifty-seven million, six hundred sixteen thousand, eight hundred twelve".