6887879 has 4 divisors (see below), whose sum is σ = 7187376. Its totient is φ = 6588384.

The previous prime is 6887863. The next prime is 6887893. The reversal of 6887879 is 9787886.

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 6887879 - 2⁴ = 6887863 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6887879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887479) 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, 149714 + ... + 149759.

It is an arithmetic number, because the mean of its divisors is an integer number (1796844).

Almost surely, 2^6887879 is an apocalyptic number.

6887879 is a deficient number, since it is larger than the sum of its proper divisors (299497).

6887879 is a wasteful number, since it uses less digits than its factorization.

6887879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299496.

The product of its digits is 1354752, while the sum is 53.

The square root of 6887879 is about 2624.4769002603. The cubic root of 6887879 is about 190.2662840629.

The spelling of 6887879 in words is "six million, eight hundred eighty-seven thousand, eight hundred seventy-nine".