720748811 has 2 divisors, whose sum is σ = 720748812. Its totient is φ = 720748810.

The previous prime is 720748771. The next prime is 720748817. The reversal of 720748811 is 118847027.

720748811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720748811 - 2¹⁸ = 720486667 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720748817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360374405 + 360374406.

It is an arithmetic number, because the mean of its divisors is an integer number (360374406).

Almost surely, 2^720748811 is an apocalyptic number.

720748811 is a deficient number, since it is larger than the sum of its proper divisors (1).

720748811 is an equidigital number, since it uses as much as digits as its factorization.

720748811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 720748811 is about 26846.7653731320. The cubic root of 720748811 is about 896.5915569509.

The spelling of 720748811 in words is "seven hundred twenty million, seven hundred forty-eight thousand, eight hundred eleven".