679979219 has 8 divisors (see below), whose sum is σ = 700072800. Its totient is φ = 660052800.

The previous prime is 679979207. The next prime is 679979227. The reversal of 679979219 is 912979976.

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

It is a cyclic number.

It is not a de Polignac number, because 679979219 - 2⁸ = 679978963 is a prime.

It is a super-2 number, since 2×679979219² = 924743476543699922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679979819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33512 + ... + 49829.

It is an arithmetic number, because the mean of its divisors is an integer number (87509100).

Almost surely, 2^679979219 is an apocalyptic number.

679979219 is a deficient number, since it is larger than the sum of its proper divisors (20093581).

679979219 is a wasteful number, since it uses less digits than its factorization.

679979219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83581.

The product of its digits is 3857868, while the sum is 59.

The square root of 679979219 is about 26076.4111602805. The cubic root of 679979219 is about 879.3569764465.

The spelling of 679979219 in words is "six hundred seventy-nine million, nine hundred seventy-nine thousand, two hundred nineteen".