679884994 has 8 divisors (see below), whose sum is σ = 1052725248. Its totient is φ = 328976580.

The previous prime is 679884977. The next prime is 679885009. The reversal of 679884994 is 499488976.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5482882 + ... + 5483005.

It is an arithmetic number, because the mean of its divisors is an integer number (131590656).

Almost surely, 2^679884994 is an apocalyptic number.

679884994 is a deficient number, since it is larger than the sum of its proper divisors (372840254).

679884994 is a wasteful number, since it uses less digits than its factorization.

679884994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10965920.

The product of its digits is 31352832, while the sum is 64.

The square root of 679884994 is about 26074.6043881782. The cubic root of 679884994 is about 879.3163569510.

The spelling of 679884994 in words is "six hundred seventy-nine million, eight hundred eighty-four thousand, nine hundred ninety-four".