868155 has 16 divisors (see below), whose sum is σ = 1434624. Its totient is φ = 447840.

The previous prime is 868151. The next prime is 868157. The reversal of 868155 is 551868.

It is not a de Polignac number, because 868155 - 2² = 868151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (89664).

2⁸⁶⁸¹⁵⁵ is an apocalyptic number.

868155 is a deficient number, since it is larger than the sum of its proper divisors (566469).

868155 is a wasteful number, since it uses less digits than its factorization.

868155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906.

The product of its digits is 9600, while the sum is 33.

The square root of 868155 is about 931.7483565856. The cubic root of 868155 is about 95.3964961421.

The spelling of 868155 in words is "eight hundred sixty-eight thousand, one hundred fifty-five".