679219579 has 4 divisors (see below), whose sum is σ = 701129920. Its totient is φ = 657309240.

The previous prime is 679219573. The next prime is 679219621. The reversal of 679219579 is 975912976.

679219579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 679219579 - 2¹⁷ = 679088507 is a prime.

It is a super-2 number, since 2×679219579² = 922678472993874482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679219573) 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, 10955124 + ... + 10955185.

It is an arithmetic number, because the mean of its divisors is an integer number (175282480).

Almost surely, 2^679219579 is an apocalyptic number.

679219579 is a deficient number, since it is larger than the sum of its proper divisors (21910341).

679219579 is a wasteful number, since it uses less digits than its factorization.

679219579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21910340.

The product of its digits is 2143260, while the sum is 55.

The square root of 679219579 is about 26061.8414353246. The cubic root of 679219579 is about 879.0293960245.

The spelling of 679219579 in words is "six hundred seventy-nine million, two hundred nineteen thousand, five hundred seventy-nine".