679220009 has 8 divisors (see below), whose sum is σ = 741771072. Its totient is φ = 618140880.

The previous prime is 679219987. The next prime is 679220021. The reversal of 679220009 is 900022976.

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 679220009 - 2⁸ = 679219753 is a prime.

It is a super-2 number, since 2×679220009² = 922679641251920162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679220029) 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, 367019 + ... + 368864.

It is an arithmetic number, because the mean of its divisors is an integer number (92721384).

Almost surely, 2^679220009 is an apocalyptic number.

It is an amenable number.

679220009 is a deficient number, since it is larger than the sum of its proper divisors (62551063).

679220009 is a wasteful number, since it uses less digits than its factorization.

679220009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735967.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 679220009 is about 26061.8496849322. The cubic root of 679220009 is about 879.0295815230.

The spelling of 679220009 in words is "six hundred seventy-nine million, two hundred twenty thousand, nine".