871667 has 4 divisors (see below), whose sum is σ = 884016. Its totient is φ = 859320.

The previous prime is 871657. The next prime is 871679. The reversal of 871667 is 766178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 871667 - 2¹⁰ = 870643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6068 + ... + 6209.

It is an arithmetic number, because the mean of its divisors is an integer number (221004).

2⁸⁷¹⁶⁶⁷ is an apocalyptic number.

871667 is a deficient number, since it is larger than the sum of its proper divisors (12349).

871667 is a wasteful number, since it uses less digits than its factorization.

871667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348.

The product of its digits is 14112, while the sum is 35.

The square root of 871667 is about 933.6310834586. The cubic root of 871667 is about 95.5249608100.

The spelling of 871667 in words is "eight hundred seventy-one thousand, six hundred sixty-seven".