871672 has 8 divisors (see below), whose sum is σ = 1634400. Its totient is φ = 435832.

The previous prime is 871657. The next prime is 871679. The reversal of 871672 is 276178.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871679) 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 as a sum of consecutive naturals, namely, 54472 + ... + 54487.

It is an arithmetic number, because the mean of its divisors is an integer number (204300).

2⁸⁷¹⁶⁷² is an apocalyptic number.

It is an amenable number.

871672 is a deficient number, since it is larger than the sum of its proper divisors (762728).

871672 is a wasteful number, since it uses less digits than its factorization.

871672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108965 (or 108961 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 871672 is about 933.6337611719. The cubic root of 871672 is about 95.5251434577.

The spelling of 871672 in words is "eight hundred seventy-one thousand, six hundred seventy-two".