720040589 has 2 divisors, whose sum is σ = 720040590. Its totient is φ = 720040588.

The previous prime is 720040501. The next prime is 720040613. The reversal of 720040589 is 985040027.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578787364 + 141253225 = 24058^2 + 11885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720040589 is a prime.

It is a super-3 number, since 3×720040589³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720090589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360020294 + 360020295.

It is an arithmetic number, because the mean of its divisors is an integer number (360020295).

Almost surely, 2^720040589 is an apocalyptic number.

It is an amenable number.

720040589 is a deficient number, since it is larger than the sum of its proper divisors (1).

720040589 is an equidigital number, since it uses as much as digits as its factorization.

720040589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 720040589 is about 26833.5720506980. The cubic root of 720040589 is about 896.2977911929.

The spelling of 720040589 in words is "seven hundred twenty million, forty thousand, five hundred eighty-nine".