679311973 has 2 divisors, whose sum is σ = 679311974. Its totient is φ = 679311972.

The previous prime is 679311953. The next prime is 679312031. The reversal of 679311973 is 379113976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372991969 + 306320004 = 19313^2 + 17502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679311973 is a prime.

It is a super-2 number, since 2×679311973² = 922929513322305458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679311953) 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, 339655986 + 339655987.

It is an arithmetic number, because the mean of its divisors is an integer number (339655987).

Almost surely, 2^679311973 is an apocalyptic number.

It is an amenable number.

679311973 is a deficient number, since it is larger than the sum of its proper divisors (1).

679311973 is an equidigital number, since it uses as much as digits as its factorization.

679311973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 46.

The square root of 679311973 is about 26063.6139666010. The cubic root of 679311973 is about 879.0692522370.

The spelling of 679311973 in words is "six hundred seventy-nine million, three hundred eleven thousand, nine hundred seventy-three".