720947011 has 2 divisors, whose sum is σ = 720947012. Its totient is φ = 720947010.

The previous prime is 720947009. The next prime is 720947021. The reversal of 720947011 is 110749027.

It is a weak prime.

It is an emirp because it is prime and its reverse (110749027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720947011 - 2¹ = 720947009 is a prime.

Together with 720947009, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720947021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360473505 + 360473506.

It is an arithmetic number, because the mean of its divisors is an integer number (360473506).

Almost surely, 2^720947011 is an apocalyptic number.

720947011 is a deficient number, since it is larger than the sum of its proper divisors (1).

720947011 is an equidigital number, since it uses as much as digits as its factorization.

720947011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 720947011 is about 26850.4564393233. The cubic root of 720947011 is about 896.6737345220.

The spelling of 720947011 in words is "seven hundred twenty million, nine hundred forty-seven thousand, eleven".