57081686 has 8 divisors (see below), whose sum is σ = 88575120. Its totient is φ = 27556648.

The previous prime is 57081679. The next prime is 57081697. The reversal of 57081686 is 68618075.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492026 + ... + 492141.

It is an arithmetic number, because the mean of its divisors is an integer number (11071890).

Almost surely, 2^57081686 is an apocalyptic number.

57081686 is a deficient number, since it is larger than the sum of its proper divisors (31493434).

57081686 is a wasteful number, since it uses less digits than its factorization.

57081686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984198.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 57081686 is about 7555.2422859892. The cubic root of 57081686 is about 385.0338667009.

The spelling of 57081686 in words is "fifty-seven million, eighty-one thousand, six hundred eighty-six".