57644879 has 4 divisors (see below), whose sum is σ = 60678840. Its totient is φ = 54610920.

The previous prime is 57644863. The next prime is 57644891. The reversal of 57644879 is 97844675.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57644879 - 2⁴ = 57644863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57644809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516952 + ... + 1516989.

It is an arithmetic number, because the mean of its divisors is an integer number (15169710).

Almost surely, 2^57644879 is an apocalyptic number.

57644879 is a deficient number, since it is larger than the sum of its proper divisors (3033961).

57644879 is a wasteful number, since it uses less digits than its factorization.

57644879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033960.

The product of its digits is 1693440, while the sum is 50.

The square root of 57644879 is about 7592.4224724392. The cubic root of 57644879 is about 386.2960291881.

The spelling of 57644879 in words is "fifty-seven million, six hundred forty-four thousand, eight hundred seventy-nine".