722728283309 has 2 divisors, whose sum is σ = 722728283310. Its totient is φ = 722728283308.

The previous prime is 722728283287. The next prime is 722728283317. The reversal of 722728283309 is 903382827227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650931080809 + 71797202500 = 806803^2 + 267950^2 .

It is a cyclic number.

It is not a de Polignac number, because 722728283309 - 2¹⁶ = 722728217773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722728283359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361364141654 + 361364141655.

It is an arithmetic number, because the mean of its divisors is an integer number (361364141655).

Almost surely, 2^722728283309 is an apocalyptic number.

It is an amenable number.

722728283309 is a deficient number, since it is larger than the sum of its proper divisors (1).

722728283309 is an equidigital number, since it uses as much as digits as its factorization.

722728283309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 722728283309 in words is "seven hundred twenty-two billion, seven hundred twenty-eight million, two hundred eighty-three thousand, three hundred nine".