868585868 has 12 divisors (see below), whose sum is σ = 1521219000. Its totient is φ = 433951872.

The previous prime is 868585849. The next prime is 868585903.

868585868 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 868585868.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79493 + ... + 89756.

It is an arithmetic number, because the mean of its divisors is an integer number (126768250).

Almost surely, 2^868585868 is an apocalyptic number.

It is an amenable number.

868585868 is a deficient number, since it is larger than the sum of its proper divisors (652633132).

868585868 is a wasteful number, since it uses less digits than its factorization.

868585868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170536 (or 170534 counting only the distinct ones).

The product of its digits is 29491200, while the sum is 62.

The square root of 868585868 is about 29471.7808759498. The cubic root of 868585868 is about 954.1227539024.

The spelling of 868585868 in words is "eight hundred sixty-eight million, five hundred eighty-five thousand, eight hundred sixty-eight".