679214917 has 2 divisors, whose sum is σ = 679214918. Its totient is φ = 679214916.

The previous prime is 679214911. The next prime is 679214927. The reversal of 679214917 is 719412976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349465636 + 329749281 = 18694^2 + 18159^2 .

It is a cyclic number.

It is not a de Polignac number, because 679214917 - 2¹¹ = 679212869 is a prime.

It is a super-2 number, since 2×679214917² = 922665806950633778, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679214911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339607458 + 339607459.

It is an arithmetic number, because the mean of its divisors is an integer number (339607459).

Almost surely, 2^679214917 is an apocalyptic number.

It is an amenable number.

679214917 is a deficient number, since it is larger than the sum of its proper divisors (1).

679214917 is an equidigital number, since it uses as much as digits as its factorization.

679214917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 679214917 is about 26061.7519940621. The cubic root of 679214917 is about 879.0273848710.

The spelling of 679214917 in words is "six hundred seventy-nine million, two hundred fourteen thousand, nine hundred seventeen".