679363969 has 2 divisors, whose sum is σ = 679363970. Its totient is φ = 679363968.

The previous prime is 679363961. The next prime is 679363999. The reversal of 679363969 is 969363976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444661569 + 234702400 = 21087^2 + 15320^2 .

It is a cyclic number.

It is not a de Polignac number, because 679363969 - 2³ = 679363961 is a prime.

It is a super-2 number, since 2×679363969² = 923070804750865922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (679363961) 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, 339681984 + 339681985.

It is an arithmetic number, because the mean of its divisors is an integer number (339681985).

Almost surely, 2^679363969 is an apocalyptic number.

It is an amenable number.

679363969 is a deficient number, since it is larger than the sum of its proper divisors (1).

679363969 is an equidigital number, since it uses as much as digits as its factorization.

679363969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 58.

The square root of 679363969 is about 26064.6114300597. The cubic root of 679363969 is about 879.0916802821.

The spelling of 679363969 in words is "six hundred seventy-nine million, three hundred sixty-three thousand, nine hundred sixty-nine".