871871 has 24 divisors (see below), whose sum is σ = 1194624. Its totient is φ = 617760.

The previous prime is 871867. The next prime is 871883. The reversal of 871871 is 178178.

It is not a de Polignac number, because 871871 - 2² = 871867 is a prime.

It is a Duffinian number.

Its product of digits (3136) is a multiple of the sum of its prime divisors (98).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12980 + ... + 13046.

It is an arithmetic number, because the mean of its divisors is an integer number (49776).

2⁸⁷¹⁸⁷¹ is an apocalyptic number.

871871 is a deficient number, since it is larger than the sum of its proper divisors (322753).

871871 is a wasteful number, since it uses less digits than its factorization.

871871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 98 counting only the distinct ones).

The product of its digits is 3136, while the sum is 32.

The square root of 871871 is about 933.7403279285. The cubic root of 871871 is about 95.5324122687.

Multiplying 871871 by its sum of digits (32), we get a palindrome (27899872).

The spelling of 871871 in words is "eight hundred seventy-one thousand, eight hundred seventy-one".