86718799 has 4 divisors (see below), whose sum is σ = 87486336. Its totient is φ = 85951264.

The previous prime is 86718791. The next prime is 86718803. The reversal of 86718799 is 99781768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86718799 - 2³ = 86718791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86718791) 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, 383599 + ... + 383824.

It is an arithmetic number, because the mean of its divisors is an integer number (21871584).

Almost surely, 2^86718799 is an apocalyptic number.

86718799 is a deficient number, since it is larger than the sum of its proper divisors (767537).

86718799 is a wasteful number, since it uses less digits than its factorization.

86718799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767536.

The product of its digits is 1524096, while the sum is 55.

The square root of 86718799 is about 9312.2928970260. The cubic root of 86718799 is about 442.6268465016.

The spelling of 86718799 in words is "eighty-six million, seven hundred eighteen thousand, seven hundred ninety-nine".