720492811 has 2 divisors, whose sum is σ = 720492812. Its totient is φ = 720492810.

The previous prime is 720492797. The next prime is 720492847. The reversal of 720492811 is 118294027.

It is a weak prime.

It is an emirp because it is prime and its reverse (118294027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720492811 - 2⁹ = 720492299 is a prime.

It is not a weakly prime, because it can be changed into another prime (720493811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360246405 + 360246406.

It is an arithmetic number, because the mean of its divisors is an integer number (360246406).

Almost surely, 2^720492811 is an apocalyptic number.

720492811 is a deficient number, since it is larger than the sum of its proper divisors (1).

720492811 is an equidigital number, since it uses as much as digits as its factorization.

720492811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 720492811 is about 26841.9971499887. The cubic root of 720492811 is about 896.4853920774.

The spelling of 720492811 in words is "seven hundred twenty million, four hundred ninety-two thousand, eight hundred eleven".