722794609 has 2 divisors, whose sum is σ = 722794610. Its totient is φ = 722794608.

The previous prime is 722794607. The next prime is 722794613. The reversal of 722794609 is 906497227.

It is a happy number.

722794609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476461584 + 246333025 = 21828^2 + 15695^2 .

It is an emirp because it is prime and its reverse (906497227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722794609 - 2¹ = 722794607 is a prime.

Together with 722794607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (722794603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361397304 + 361397305.

It is an arithmetic number, because the mean of its divisors is an integer number (361397305).

Almost surely, 2^722794609 is an apocalyptic number.

It is an amenable number.

722794609 is a deficient number, since it is larger than the sum of its proper divisors (1).

722794609 is an equidigital number, since it uses as much as digits as its factorization.

722794609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 722794609 is about 26884.8397614715. The cubic root of 722794609 is about 897.4390609431.

The spelling of 722794609 in words is "seven hundred twenty-two million, seven hundred ninety-four thousand, six hundred nine".