57621612 has 24 divisors (see below), whose sum is σ = 136346112. Its totient is φ = 18936400.

The previous prime is 57621607. The next prime is 57621631. The reversal of 57621612 is 21612675.

It is a self number, because there is not a number n which added to its sum of digits gives 57621612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32964 + ... + 34667.

It is an arithmetic number, because the mean of its divisors is an integer number (5681088).

Almost surely, 2^57621612 is an apocalyptic number.

It is an amenable number.

57621612 is an abundant number, since it is smaller than the sum of its proper divisors (78724500).

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

57621612 is a wasteful number, since it uses less digits than its factorization.

57621612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67709 (or 67707 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 57621612 is about 7590.8900663888. The cubic root of 57621612 is about 386.2440490909.

The spelling of 57621612 in words is "fifty-seven million, six hundred twenty-one thousand, six hundred twelve".