722716009 has 2 divisors, whose sum is σ = 722716010. Its totient is φ = 722716008.

The previous prime is 722715971. The next prime is 722716031. The reversal of 722716009 is 900617227.

722716009 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 can be written as a sum of positive squares in only one way, i.e., 700766784 + 21949225 = 26472^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 722716009 - 2¹⁷ = 722584937 is a prime.

It is not a weakly prime, because it can be changed into another prime (722713009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361358004 + 361358005.

It is an arithmetic number, because the mean of its divisors is an integer number (361358005).

Almost surely, 2^722716009 is an apocalyptic number.

It is an amenable number.

722716009 is a deficient number, since it is larger than the sum of its proper divisors (1).

722716009 is an equidigital number, since it uses as much as digits as its factorization.

722716009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 722716009 is about 26883.3779313538. The cubic root of 722716009 is about 897.4065292177.

The spelling of 722716009 in words is "seven hundred twenty-two million, seven hundred sixteen thousand, nine".