57673881 has 6 divisors (see below), whose sum is σ = 83306730. Its totient is φ = 38449248.

The previous prime is 57673867. The next prime is 57673883. The reversal of 57673881 is 18837675.

57673881 is a `hidden beast` number, since 576 + 73 + 8 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56025225 + 1648656 = 7485^2 + 1284^2 .

It is not a de Polignac number, because 57673881 - 2⁶ = 57673817 is a prime.

It is a super-2 number, since 2×57673881² = 6652553099204322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57673883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3204096 + ... + 3204113.

It is an arithmetic number, because the mean of its divisors is an integer number (13884455).

Almost surely, 2^57673881 is an apocalyptic number.

It is an amenable number.

57673881 is a deficient number, since it is larger than the sum of its proper divisors (25632849).

57673881 is a wasteful number, since it uses less digits than its factorization.

57673881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408215 (or 6408212 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 57673881 is about 7594.3321628699. The cubic root of 57673881 is about 386.3608020948.

The spelling of 57673881 in words is "fifty-seven million, six hundred seventy-three thousand, eight hundred eighty-one".