86171866 has 8 divisors (see below), whose sum is σ = 141008544. Its totient is φ = 39169020.

The previous prime is 86171863. The next prime is 86171867. The reversal of 86171866 is 66817168.

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

It is not an unprimeable number, because it can be changed into a prime (86171863) 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, 1958430 + ... + 1958473.

It is an arithmetic number, because the mean of its divisors is an integer number (17626068).

Almost surely, 2^86171866 is an apocalyptic number.

86171866 is a deficient number, since it is larger than the sum of its proper divisors (54836678).

86171866 is a wasteful number, since it uses less digits than its factorization.

86171866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916916.

The product of its digits is 96768, while the sum is 43.

The square root of 86171866 is about 9282.8802642283. The cubic root of 86171866 is about 441.6943383319.

It can be divided in two parts, 861 and 71866, that added together give a palindrome (72727).

The spelling of 86171866 in words is "eighty-six million, one hundred seventy-one thousand, eight hundred sixty-six".