86520799 has 4 divisors (see below), whose sum is σ = 87412864. Its totient is φ = 85628736.

The previous prime is 86520793. The next prime is 86520809. The reversal of 86520799 is 99702568.

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 86520799 - 2⁵ = 86520767 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 (86520793) 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, 445887 + ... + 446080.

It is an arithmetic number, because the mean of its divisors is an integer number (21853216).

Almost surely, 2^86520799 is an apocalyptic number.

86520799 is a deficient number, since it is larger than the sum of its proper divisors (892065).

86520799 is an equidigital number, since it uses as much as digits as its factorization.

86520799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892064.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 86520799 is about 9301.6557128288. The cubic root of 86520799 is about 442.2897150586.

The spelling of 86520799 in words is "eighty-six million, five hundred twenty thousand, seven hundred ninety-nine".