868816085 has 4 divisors (see below), whose sum is σ = 1042579308. Its totient is φ = 695052864.

The previous prime is 868816079. The next prime is 868816087. The reversal of 868816085 is 580618868.

868816085 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 can be written as a sum of positive squares in 2 ways, for example, as 456847876 + 411968209 = 21374^2 + 20297^2 .

It is a cyclic number.

It is not a de Polignac number, because 868816085 - 2²⁸ = 600380629 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 (868816087) 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, 86881604 + ... + 86881613.

It is an arithmetic number, because the mean of its divisors is an integer number (260644827).

Almost surely, 2^868816085 is an apocalyptic number.

It is an amenable number.

868816085 is a deficient number, since it is larger than the sum of its proper divisors (173763223).

868816085 is a wasteful number, since it uses less digits than its factorization.

868816085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173763222.

The product of its (nonzero) digits is 737280, while the sum is 50.

The square root of 868816085 is about 29475.6863363688. The cubic root of 868816085 is about 954.2070425846.

The spelling of 868816085 in words is "eight hundred sixty-eight million, eight hundred sixteen thousand, eighty-five".