6879212617 has 4 divisors (see below), whose sum is σ = 6914132676. Its totient is φ = 6844292560.

The previous prime is 6879212581. The next prime is 6879212621. The reversal of 6879212617 is 7162129786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6738932281 + 140280336 = 82091^2 + 11844^2 .

It is a cyclic number.

It is not a de Polignac number, because 6879212617 - 2⁷ = 6879212489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6879212657) 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, 17459734 + ... + 17460127.

It is an arithmetic number, because the mean of its divisors is an integer number (1728533169).

Almost surely, 2^6879212617 is an apocalyptic number.

It is an amenable number.

6879212617 is a deficient number, since it is larger than the sum of its proper divisors (34920059).

6879212617 is a wasteful number, since it uses less digits than its factorization.

6879212617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34920058.

The product of its digits is 508032, while the sum is 49.

The square root of 6879212617 is about 82941.0189050026. The cubic root of 6879212617 is about 1901.8645239848.

The spelling of 6879212617 in words is "six billion, eight hundred seventy-nine million, two hundred twelve thousand, six hundred seventeen".