865585113 has 4 divisors (see below), whose sum is σ = 1154113488. Its totient is φ = 577056740.

The previous prime is 865585103. The next prime is 865585129. The reversal of 865585113 is 311585568.

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 a cyclic number.

It is not a de Polignac number, because 865585113 - 2⁵ = 865585081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (865585103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144264183 + ... + 144264188.

It is an arithmetic number, because the mean of its divisors is an integer number (288528372).

Almost surely, 2^865585113 is an apocalyptic number.

It is an amenable number.

865585113 is a deficient number, since it is larger than the sum of its proper divisors (288528375).

865585113 is a wasteful number, since it uses less digits than its factorization.

865585113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288528374.

The product of its digits is 144000, while the sum is 42.

The square root of 865585113 is about 29420.8278775428. The cubic root of 865585113 is about 953.0227313767.

The spelling of 865585113 in words is "eight hundred sixty-five million, five hundred eighty-five thousand, one hundred thirteen".