86565873 has 4 divisors (see below), whose sum is σ = 115421168. Its totient is φ = 57710580.

The previous prime is 86565863. The next prime is 86565901. The reversal of 86565873 is 37856568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86565873 - 2⁸ = 86565617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86565823) 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, 14427643 + ... + 14427648.

It is an arithmetic number, because the mean of its divisors is an integer number (28855292).

Almost surely, 2^86565873 is an apocalyptic number.

It is an amenable number.

86565873 is a deficient number, since it is larger than the sum of its proper divisors (28855295).

86565873 is a wasteful number, since it uses less digits than its factorization.

86565873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28855294.

The product of its digits is 1209600, while the sum is 48.

The square root of 86565873 is about 9304.0782993266. The cubic root of 86565873 is about 442.3665070205.

The spelling of 86565873 in words is "eighty-six million, five hundred sixty-five thousand, eight hundred seventy-three".