86812665 has 8 divisors (see below), whose sum is σ = 138900288. Its totient is φ = 46300080.

The previous prime is 86812651. The next prime is 86812681. The reversal of 86812665 is 56621868.

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

It is not a de Polignac number, because 86812665 - 2⁵ = 86812633 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 2893741 + ... + 2893770.

It is an arithmetic number, because the mean of its divisors is an integer number (17362536).

Almost surely, 2^86812665 is an apocalyptic number.

It is an amenable number.

86812665 is a deficient number, since it is larger than the sum of its proper divisors (52087623).

86812665 is a wasteful number, since it uses less digits than its factorization.

86812665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787519.

The product of its digits is 138240, while the sum is 42.

The square root of 86812665 is about 9317.3314312629. The cubic root of 86812665 is about 442.7864913554.

The spelling of 86812665 in words is "eighty-six million, eight hundred twelve thousand, six hundred sixty-five".