86571 has 6 divisors (see below), whose sum is σ = 125060. Its totient is φ = 57708.

The previous prime is 86561. The next prime is 86573. The reversal of 86571 is 17568.

86571 is a `hidden beast` number, since 8 + 657 + 1 = 666.

It is not a de Polignac number, because 86571 - 2⁵ = 86539 is a prime.

It is a Duffinian number.

86571 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (86573) 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, 4801 + ... + 4818.

2⁸⁶⁵⁷¹ is an apocalyptic number.

86571 is a deficient number, since it is larger than the sum of its proper divisors (38489).

86571 is a wasteful number, since it uses less digits than its factorization.

86571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625 (or 9622 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 86571 is about 294.2295022597. The cubic root of 86571 is about 44.2375240132.

The spelling of 86571 in words is "eighty-six thousand, five hundred seventy-one".