679723799 has 2 divisors, whose sum is σ = 679723800. Its totient is φ = 679723798.

The previous prime is 679723787. The next prime is 679723817. The reversal of 679723799 is 997327976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679723799 - 2⁴ = 679723783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679723999) 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, 339861899 + 339861900.

It is an arithmetic number, because the mean of its divisors is an integer number (339861900).

Almost surely, 2^679723799 is an apocalyptic number.

679723799 is a deficient number, since it is larger than the sum of its proper divisors (1).

679723799 is an equidigital number, since it uses as much as digits as its factorization.

679723799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9001692, while the sum is 59.

The square root of 679723799 is about 26071.5131705085. The cubic root of 679723799 is about 879.2468586266.

The spelling of 679723799 in words is "six hundred seventy-nine million, seven hundred twenty-three thousand, seven hundred ninety-nine".