720982513 has 2 divisors, whose sum is σ = 720982514. Its totient is φ = 720982512.

The previous prime is 720982489. The next prime is 720982523. The reversal of 720982513 is 315289027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694480609 + 26501904 = 26353^2 + 5148^2 .

It is a cyclic number.

It is not a de Polignac number, because 720982513 - 2⁹ = 720982001 is a prime.

It is not a weakly prime, because it can be changed into another prime (720982523) 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, 360491256 + 360491257.

It is an arithmetic number, because the mean of its divisors is an integer number (360491257).

Almost surely, 2^720982513 is an apocalyptic number.

It is an amenable number.

720982513 is a deficient number, since it is larger than the sum of its proper divisors (1).

720982513 is an equidigital number, since it uses as much as digits as its factorization.

720982513 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 37.

The square root of 720982513 is about 26851.1175372646. The cubic root of 720982513 is about 896.6884527504.

The spelling of 720982513 in words is "seven hundred twenty million, nine hundred eighty-two thousand, five hundred thirteen".