57684389 has 4 divisors (see below), whose sum is σ = 65925024. Its totient is φ = 49443756.

The previous prime is 57684373. The next prime is 57684401. The reversal of 57684389 is 98348675.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57684389 - 2⁴ = 57684373 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 (57683389) 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, 4120307 + ... + 4120320.

It is an arithmetic number, because the mean of its divisors is an integer number (16481256).

Almost surely, 2^57684389 is an apocalyptic number.

It is an amenable number.

57684389 is a deficient number, since it is larger than the sum of its proper divisors (8240635).

57684389 is an equidigital number, since it uses as much as digits as its factorization.

57684389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8240634.

The product of its digits is 1451520, while the sum is 50.

The square root of 57684389 is about 7595.0239630958. The cubic root of 57684389 is about 386.3842652448.

The spelling of 57684389 in words is "fifty-seven million, six hundred eighty-four thousand, three hundred eighty-nine".