679704479 has 2 divisors, whose sum is σ = 679704480. Its totient is φ = 679704478.

The previous prime is 679704469. The next prime is 679704503. The reversal of 679704479 is 974407976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679704479 - 2⁴ = 679704463 is a prime.

It is a super-2 number, since 2×679704479² = 923996357545322882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679704479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679704469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339852239 + 339852240.

It is an arithmetic number, because the mean of its divisors is an integer number (339852240).

Almost surely, 2^679704479 is an apocalyptic number.

679704479 is a deficient number, since it is larger than the sum of its proper divisors (1).

679704479 is an equidigital number, since it uses as much as digits as its factorization.

679704479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 53.

The square root of 679704479 is about 26071.1426485300. The cubic root of 679704479 is about 879.2385281791.

The spelling of 679704479 in words is "six hundred seventy-nine million, seven hundred four thousand, four hundred seventy-nine".