6879559 has 4 divisors (see below), whose sum is σ = 7009416. Its totient is φ = 6749704.

The previous prime is 6879541. The next prime is 6879581. The reversal of 6879559 is 9559786.

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 6879559 - 2¹⁷ = 6748487 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 (6879589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64849 + ... + 64954.

It is an arithmetic number, because the mean of its divisors is an integer number (1752354).

Almost surely, 2^6879559 is an apocalyptic number.

6879559 is a deficient number, since it is larger than the sum of its proper divisors (129857).

6879559 is a wasteful number, since it uses less digits than its factorization.

6879559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129856.

The product of its digits is 680400, while the sum is 49.

The square root of 6879559 is about 2622.8913435367. The cubic root of 6879559 is about 190.1896444425.

The spelling of 6879559 in words is "six million, eight hundred seventy-nine thousand, five hundred fifty-nine".