86171166 has 24 divisors (see below), whose sum is σ = 188453304. Its totient is φ = 28454640.

The previous prime is 86171153. The next prime is 86171167. The reversal of 86171166 is 66117168.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86171166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86171167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20445 + ... + 24296.

It is an arithmetic number, because the mean of its divisors is an integer number (7852221).

Almost surely, 2^86171166 is an apocalyptic number.

86171166 is an abundant number, since it is smaller than the sum of its proper divisors (102282138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86171166 is a wasteful number, since it uses less digits than its factorization.

86171166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44856 (or 44853 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 86171166 is about 9282.8425603368. The cubic root of 86171166 is about 441.6931423233.

It can be divided in two parts, 861 and 71166, that added together give a palindrome (72027).

The spelling of 86171166 in words is "eighty-six million, one hundred seventy-one thousand, one hundred sixty-six".