86172698 has 8 divisors (see below), whose sum is σ = 129606708. Its totient is φ = 42970464.

The previous prime is 86172689. The next prime is 86172703. The reversal of 86172698 is 89627168.

It can be written as a sum of positive squares in 2 ways, for example, as 82319329 + 3853369 = 9073^2 + 1963^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57011 + ... + 58502.

Almost surely, 2^86172698 is an apocalyptic number.

86172698 is a deficient number, since it is larger than the sum of its proper divisors (43434010).

86172698 is a wasteful number, since it uses less digits than its factorization.

86172698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115888.

The product of its digits is 290304, while the sum is 47.

The square root of 86172698 is about 9282.9250777974. The cubic root of 86172698 is about 441.6957598651.

The spelling of 86172698 in words is "eighty-six million, one hundred seventy-two thousand, six hundred ninety-eight".