679279 has 2 divisors, whose sum is σ = 679280. Its totient is φ = 679278.

The previous prime is 679277. The next prime is 679297. The reversal of 679279 is 972976.

Together with next prime (679297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679279 - 2¹ = 679277 is a prime.

It is a super-2 number, since 2×679279² = 922839919682, which contains 22 as substring.

Together with 679277, it forms a pair of twin primes.

It is a Chen prime.

679279 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679277) 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 as a sum of consecutive naturals, namely, 339639 + 339640.

It is an arithmetic number, because the mean of its divisors is an integer number (339640).

2⁶⁷⁹²⁷⁹ is an apocalyptic number.

679279 is a deficient number, since it is larger than the sum of its proper divisors (1).

679279 is an equidigital number, since it uses as much as digits as its factorization.

679279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 679279 is about 824.1838387156. The cubic root of 679279 is about 87.9055029013.

The spelling of 679279 in words is "six hundred seventy-nine thousand, two hundred seventy-nine".