86712172 has 12 divisors (see below), whose sum is σ = 160672680. Its totient is φ = 40805696.

The previous prime is 86712163. The next prime is 86712179. The reversal of 86712172 is 27121768.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (86712179) 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, 637522 + ... + 637657.

It is an arithmetic number, because the mean of its divisors is an integer number (13389390).

Almost surely, 2^86712172 is an apocalyptic number.

It is an amenable number.

86712172 is a deficient number, since it is larger than the sum of its proper divisors (73960508).

86712172 is a wasteful number, since it uses less digits than its factorization.

86712172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275200 (or 1275198 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 86712172 is about 9311.9370702341. The cubic root of 86712172 is about 442.6155711193.

The spelling of 86712172 in words is "eighty-six million, seven hundred twelve thousand, one hundred seventy-two".