871744 has 28 divisors (see below), whose sum is σ = 1769364. Its totient is φ = 425984.

The previous prime is 871727. The next prime is 871763. The reversal of 871744 is 447178.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 97344 = 880^2 + 312^2 .

It is a congruent number.

It is an unprimeable number.

871744 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 3 ways as a sum of consecutive naturals, for example, 3264 + ... + 3520.

2⁸⁷¹⁷⁴⁴ 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 871744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884682).

871744 is an abundant number, since it is smaller than the sum of its proper divisors (897620).

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

871744 is a wasteful number, since it uses less digits than its factorization.

871744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 312 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 871744 is about 933.6723193926. The cubic root of 871744 is about 95.5277735070.

It can be divided in two parts, 87174 and 4, that added together give a palindrome (87178).

The spelling of 871744 in words is "eight hundred seventy-one thousand, seven hundred forty-four".