870171 has 4 divisors (see below), whose sum is σ = 1160232. Its totient is φ = 580112.

The previous prime is 870169. The next prime is 870173. The reversal of 870171 is 171078.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (870169) and next prime (870173).

It is a cyclic number.

It is not a de Polignac number, because 870171 - 2¹ = 870169 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (870173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145026 + ... + 145031.

It is an arithmetic number, because the mean of its divisors is an integer number (290058).

2⁸⁷⁰¹⁷¹ is an apocalyptic number.

870171 is a deficient number, since it is larger than the sum of its proper divisors (290061).

870171 is a wasteful number, since it uses less digits than its factorization.

870171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290060.

The product of its (nonzero) digits is 392, while the sum is 24.

The square root of 870171 is about 932.8295664268. The cubic root of 870171 is about 95.4702812236.

The spelling of 870171 in words is "eight hundred seventy thousand, one hundred seventy-one".