871686156 has 96 divisors (see below), whose sum is σ = 2260855296. Its totient is φ = 259200000.

The previous prime is 871686113. The next prime is 871686187. The reversal of 871686156 is 651686178.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2012916 + ... + 2013348.

It is an arithmetic number, because the mean of its divisors is an integer number (23550576).

Almost surely, 2^871686156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871686156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130427648).

871686156 is an abundant number, since it is smaller than the sum of its proper divisors (1389169140).

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

871686156 is a wasteful number, since it uses less digits than its factorization.

871686156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 701 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 871686156 is about 29524.3315927728. The cubic root of 871686156 is about 955.2566056607.

The spelling of 871686156 in words is "eight hundred seventy-one million, six hundred eighty-six thousand, one hundred fifty-six".