86985172 has 24 divisors (see below), whose sum is σ = 159630912. Its totient is φ = 41395200.

The previous prime is 86985169. The next prime is 86985193. The reversal of 86985172 is 27158968.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17172 + ... + 21652.

It is an arithmetic number, because the mean of its divisors is an integer number (6651288).

Almost surely, 2^86985172 is an apocalyptic number.

It is an amenable number.

86985172 is a deficient number, since it is larger than the sum of its proper divisors (72645740).

86985172 is a wasteful number, since it uses less digits than its factorization.

86985172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719 (or 4717 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 86985172 is about 9326.5841549841. The cubic root of 86985172 is about 443.0795869559.

The spelling of 86985172 in words is "eighty-six million, nine hundred eighty-five thousand, one hundred seventy-two".