720345343 has 2 divisors, whose sum is σ = 720345344. Its totient is φ = 720345342.

The previous prime is 720345323. The next prime is 720345361. The reversal of 720345343 is 343543027.

It is a strong prime.

It is an emirp because it is prime and its reverse (343543027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720345343 - 2²⁵ = 686790911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720345323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360172671 + 360172672.

It is an arithmetic number, because the mean of its divisors is an integer number (360172672).

Almost surely, 2^720345343 is an apocalyptic number.

720345343 is a deficient number, since it is larger than the sum of its proper divisors (1).

720345343 is an equidigital number, since it uses as much as digits as its factorization.

720345343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 31.

The square root of 720345343 is about 26839.2500454092. The cubic root of 720345343 is about 896.4242247179.

It can be divided in two parts, 72034 and 5343, that added together give a palindrome (77377).

The spelling of 720345343 in words is "seven hundred twenty million, three hundred forty-five thousand, three hundred forty-three".