871579 has 4 divisors (see below), whose sum is σ = 874120. Its totient is φ = 869040.

The previous prime is 871571. The next prime is 871589. The reversal of 871579 is 975178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975178 = 2 ⋅487589.

It is a cyclic number.

It is not a de Polignac number, because 871579 - 2³ = 871571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871571) 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 in 3 ways as a sum of consecutive naturals, for example, 657 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (218530).

2⁸⁷¹⁵⁷⁹ is an apocalyptic number.

871579 is a deficient number, since it is larger than the sum of its proper divisors (2541).

871579 is a wasteful number, since it uses less digits than its factorization.

871579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its digits is 17640, while the sum is 37.

The square root of 871579 is about 933.5839544465. The cubic root of 871579 is about 95.5217460964.

The spelling of 871579 in words is "eight hundred seventy-one thousand, five hundred seventy-nine".