868170 has 32 divisors (see below), whose sum is σ = 2135232. Its totient is φ = 225792.

The previous prime is 868157. The next prime is 868171. The reversal of 868170 is 71868.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (868171) by changing a digit.

868170 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (66726).

2⁸⁶⁸¹⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067616).

868170 is an abundant number, since it is smaller than the sum of its proper divisors (1267062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868170 is a wasteful number, since it uses less digits than its factorization.

868170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 868170 is about 931.7564059345. The cubic root of 868170 is about 95.3970455598.

It can be divided in two parts, 86 and 8170, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 868170 in words is "eight hundred sixty-eight thousand, one hundred seventy".