868585867 has 4 divisors (see below), whose sum is σ = 869761960. Its totient is φ = 867409776.

The previous prime is 868585849. The next prime is 868585903. The reversal of 868585867 is 768585868.

868585867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868585867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868585567) 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, 586938 + ... + 588415.

It is an arithmetic number, because the mean of its divisors is an integer number (217440490).

Almost surely, 2^868585867 is an apocalyptic number.

868585867 is a deficient number, since it is larger than the sum of its proper divisors (1176093).

868585867 is a wasteful number, since it uses less digits than its factorization.

868585867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176092.

The product of its digits is 25804800, while the sum is 61.

The square root of 868585867 is about 29471.7808589844. The cubic root of 868585867 is about 954.1227535363.

Subtracting from 868585867 its reverse (768585868), we obtain a palindrome (99999999).

The spelling of 868585867 in words is "eight hundred sixty-eight million, five hundred eighty-five thousand, eight hundred sixty-seven".