720754459 has 2 divisors, whose sum is σ = 720754460. Its totient is φ = 720754458.

The previous prime is 720754453. The next prime is 720754469. The reversal of 720754459 is 954457027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720754459 - 2¹³ = 720746267 is a prime.

It is not a weakly prime, because it can be changed into another prime (720754453) 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, 360377229 + 360377230.

It is an arithmetic number, because the mean of its divisors is an integer number (360377230).

Almost surely, 2^720754459 is an apocalyptic number.

720754459 is a deficient number, since it is larger than the sum of its proper divisors (1).

720754459 is an equidigital number, since it uses as much as digits as its factorization.

720754459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 720754459 is about 26846.8705625069. The cubic root of 720754459 is about 896.5938989300.

The spelling of 720754459 in words is "seven hundred twenty million, seven hundred fifty-four thousand, four hundred fifty-nine".