720564829 has 2 divisors, whose sum is σ = 720564830. Its totient is φ = 720564828.

The previous prime is 720564821. The next prime is 720564841. The reversal of 720564829 is 928465027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411156729 + 309408100 = 20277^2 + 17590^2 .

It is a cyclic number.

It is not a de Polignac number, because 720564829 - 2³ = 720564821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720564821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360282414 + 360282415.

It is an arithmetic number, because the mean of its divisors is an integer number (360282415).

Almost surely, 2^720564829 is an apocalyptic number.

It is an amenable number.

720564829 is a deficient number, since it is larger than the sum of its proper divisors (1).

720564829 is an equidigital number, since it uses as much as digits as its factorization.

720564829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 720564829 is about 26843.3386336350. The cubic root of 720564829 is about 896.5152609547.

The spelling of 720564829 in words is "seven hundred twenty million, five hundred sixty-four thousand, eight hundred twenty-nine".