720732811 has 2 divisors, whose sum is σ = 720732812. Its totient is φ = 720732810.

The previous prime is 720732791. The next prime is 720732823. The reversal of 720732811 is 118237027.

720732811 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 720732811 - 2¹¹ = 720730763 is a prime.

It is not a weakly prime, because it can be changed into another prime (720732851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360366405 + 360366406.

It is an arithmetic number, because the mean of its divisors is an integer number (360366406).

Almost surely, 2^720732811 is an apocalyptic number.

720732811 is a deficient number, since it is larger than the sum of its proper divisors (1).

720732811 is an equidigital number, since it uses as much as digits as its factorization.

720732811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 720732811 is about 26846.4673839967. The cubic root of 720732811 is about 896.5849223829.

Adding to 720732811 its reverse (118237027), we get a palindrome (838969838).

The spelling of 720732811 in words is "seven hundred twenty million, seven hundred thirty-two thousand, eight hundred eleven".