870155 has 16 divisors (see below), whose sum is σ = 1227744. Its totient is φ = 583680.

The previous prime is 870151. The next prime is 870161. The reversal of 870155 is 551078.

870155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 870155 - 2² = 870151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870151) 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, 107 + ... + 1323.

It is an arithmetic number, because the mean of its divisors is an integer number (76734).

2⁸⁷⁰¹⁵⁵ is an apocalyptic number.

870155 is a deficient number, since it is larger than the sum of its proper divisors (357589).

870155 is a wasteful number, since it uses less digits than its factorization.

870155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 870155 is about 932.8209903299. The cubic root of 870155 is about 95.4696960766.

The spelling of 870155 in words is "eight hundred seventy thousand, one hundred fifty-five".