679912881 has 8 divisors (see below), whose sum is σ = 928661664. Its totient is φ = 442219680.

The previous prime is 679912817. The next prime is 679912889. The reversal of 679912881 is 188219976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 679912881 - 2⁶ = 679912817 is a prime.

It is a super-2 number, since 2×679912881² = 924563051499440322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679912889) 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 7 ways as a sum of consecutive naturals, for example, 2763751 + ... + 2763996.

It is an arithmetic number, because the mean of its divisors is an integer number (116082708).

Almost surely, 2^679912881 is an apocalyptic number.

It is an amenable number.

679912881 is a deficient number, since it is larger than the sum of its proper divisors (248748783).

679912881 is a wasteful number, since it uses less digits than its factorization.

679912881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527791.

The product of its digits is 435456, while the sum is 51.

The square root of 679912881 is about 26075.1391367333. The cubic root of 679912881 is about 879.3283791607.

The spelling of 679912881 in words is "six hundred seventy-nine million, nine hundred twelve thousand, eight hundred eighty-one".