868320855 has 12 divisors (see below), whose sum is σ = 1505089560. Its totient is φ = 463104432.

The previous prime is 868320853. The next prime is 868320857. The reversal of 868320855 is 558023868.

It is a happy number.

868320855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (868320853) and next prime (868320857).

It is not a de Polignac number, because 868320855 - 2¹ = 868320853 is a prime.

It is a super-2 number, since 2×868320855² = 1507962214455862050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19296019 = 868320855 / (8 + 6 + 8 + 3 + 2 + 0 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 868320855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868320853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9647965 + ... + 9648054.

It is an arithmetic number, because the mean of its divisors is an integer number (125424130).

Almost surely, 2^868320855 is an apocalyptic number.

868320855 is a deficient number, since it is larger than the sum of its proper divisors (636768705).

868320855 is a wasteful number, since it uses less digits than its factorization.

868320855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19296030 (or 19296027 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 868320855 is about 29467.2844863588. The cubic root of 868320855 is about 954.0257070193.

The spelling of 868320855 in words is "eight hundred sixty-eight million, three hundred twenty thousand, eight hundred fifty-five".