86179881 has 8 divisors (see below), whose sum is σ = 114996384. Its totient is φ = 57408320.

The previous prime is 86179867. The next prime is 86179883. The reversal of 86179881 is 18897168.

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

It is a cyclic number.

It is not a de Polignac number, because 86179881 - 2⁹ = 86179369 is a prime.

It is a super-2 number, since 2×86179881² = 14853943778348322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86179881.

It is not an unprimeable number, because it can be changed into a prime (86179883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6471 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (14374548).

Almost surely, 2^86179881 is an apocalyptic number.

It is an amenable number.

86179881 is a deficient number, since it is larger than the sum of its proper divisors (28816503).

86179881 is a wasteful number, since it uses less digits than its factorization.

86179881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22471.

The product of its digits is 193536, while the sum is 48.

The square root of 86179881 is about 9283.3119628719. The cubic root of 86179881 is about 441.7080321686.

The spelling of 86179881 in words is "eighty-six million, one hundred seventy-nine thousand, eight hundred eighty-one".