679875359117 has 4 divisors (see below), whose sum is σ = 681095961756. Its totient is φ = 678654756480.

The previous prime is 679875359113. The next prime is 679875359143. The reversal of 679875359117 is 711953578976.

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 300836892196 + 379038466921 = 548486^2 + 615661^2 .

It is a cyclic number.

It is not a de Polignac number, because 679875359117 - 2² = 679875359113 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 (679875359113) 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, 610300484 + ... + 610301597.

It is an arithmetic number, because the mean of its divisors is an integer number (170273990439).

Almost surely, 2^679875359117 is an apocalyptic number.

It is an amenable number.

679875359117 is a deficient number, since it is larger than the sum of its proper divisors (1220602639).

679875359117 is a wasteful number, since it uses less digits than its factorization.

679875359117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220602638.

The product of its digits is 100018800, while the sum is 68.

The spelling of 679875359117 in words is "six hundred seventy-nine billion, eight hundred seventy-five million, three hundred fifty-nine thousand, one hundred seventeen".