57878685 has 16 divisors (see below), whose sum is σ = 102895680. Its totient is φ = 30868560.

The previous prime is 57878683. The next prime is 57878699. The reversal of 57878685 is 58687875.

It is a happy number.

57878685 is a `hidden beast` number, since 578 + 7 + 8 + 68 + 5 = 666.

It is not a de Polignac number, because 57878685 - 2¹ = 57878683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57878683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214231 + ... + 214500.

It is an arithmetic number, because the mean of its divisors is an integer number (6430980).

Almost surely, 2^57878685 is an apocalyptic number.

It is an amenable number.

57878685 is a deficient number, since it is larger than the sum of its proper divisors (45016995).

57878685 is a wasteful number, since it uses less digits than its factorization.

57878685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428745 (or 428739 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The square root of 57878685 is about 7607.8042167238. The cubic root of 57878685 is about 386.8175932648.

The spelling of 57878685 in words is "fifty-seven million, eight hundred seventy-eight thousand, six hundred eighty-five".