720344719 has 2 divisors, whose sum is σ = 720344720. Its totient is φ = 720344718.

The previous prime is 720344711. The next prime is 720344743. The reversal of 720344719 is 917443027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720344719 - 2³ = 720344711 is a prime.

It is a super-2 number, since 2×720344719² = 1037793028382377922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720344711) 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, 360172359 + 360172360.

It is an arithmetic number, because the mean of its divisors is an integer number (360172360).

Almost surely, 2^720344719 is an apocalyptic number.

720344719 is a deficient number, since it is larger than the sum of its proper divisors (1).

720344719 is an equidigital number, since it uses as much as digits as its factorization.

720344719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 720344719 is about 26839.2384206408. The cubic root of 720344719 is about 896.4239658750.

The spelling of 720344719 in words is "seven hundred twenty million, three hundred forty-four thousand, seven hundred nineteen".