57671687 has 4 divisors (see below), whose sum is σ = 59532096. Its totient is φ = 55811280.

The previous prime is 57671683. The next prime is 57671689. The reversal of 57671687 is 78617675.

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 57671687 - 2² = 57671683 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 (57671683) 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, 930158 + ... + 930219.

It is an arithmetic number, because the mean of its divisors is an integer number (14883024).

Almost surely, 2^57671687 is an apocalyptic number.

57671687 is a deficient number, since it is larger than the sum of its proper divisors (1860409).

57671687 is a wasteful number, since it uses less digits than its factorization.

57671687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860408.

The product of its digits is 493920, while the sum is 47.

The square root of 57671687 is about 7594.1877116648. The cubic root of 57671687 is about 386.3559027866.

The spelling of 57671687 in words is "fifty-seven million, six hundred seventy-one thousand, six hundred eighty-seven".