879871687 has 4 divisors (see below), whose sum is σ = 910212120. Its totient is φ = 849531256.

The previous prime is 879871679. The next prime is 879871691. The reversal of 879871687 is 786178978.

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 879871687 - 2³ = 879871679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879871637) 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, 15170173 + ... + 15170230.

It is an arithmetic number, because the mean of its divisors is an integer number (227553030).

Almost surely, 2^879871687 is an apocalyptic number.

879871687 is a deficient number, since it is larger than the sum of its proper divisors (30340433).

879871687 is a wasteful number, since it uses less digits than its factorization.

879871687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30340432.

The product of its digits is 9483264, while the sum is 61.

The square root of 879871687 is about 29662.6311543666. The cubic root of 879871687 is about 958.2373932807.

The spelling of 879871687 in words is "eight hundred seventy-nine million, eight hundred seventy-one thousand, six hundred eighty-seven".