868155995 has 16 divisors (see below), whose sum is σ = 1199708928. Its totient is φ = 590759520.

The previous prime is 868155991. The next prime is 868156001. The reversal of 868155995 is 599551868.

It is not a de Polignac number, because 868155995 - 2² = 868155991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 868155995.

It is not an unprimeable number, because it can be changed into a prime (868155991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90089 + ... + 99258.

It is an arithmetic number, because the mean of its divisors is an integer number (74981808).

Almost surely, 2^868155995 is an apocalyptic number.

868155995 is a deficient number, since it is larger than the sum of its proper divisors (331552933).

868155995 is a wasteful number, since it uses less digits than its factorization.

868155995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189490.

The product of its digits is 3888000, while the sum is 56.

The square root of 868155995 is about 29464.4870140310. The cubic root of 868155995 is about 953.9653258702.

The spelling of 868155995 in words is "eight hundred sixty-eight million, one hundred fifty-five thousand, nine hundred ninety-five".