722263639 has 2 divisors, whose sum is σ = 722263640. Its totient is φ = 722263638.

The previous prime is 722263627. The next prime is 722263651. The reversal of 722263639 is 936362227.

It is a balanced prime because it is at equal distance from previous prime (722263627) and next prime (722263651).

It is a cyclic number.

It is not a de Polignac number, because 722263639 - 2¹⁵ = 722230871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722263439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361131819 + 361131820.

It is an arithmetic number, because the mean of its divisors is an integer number (361131820).

Almost surely, 2^722263639 is an apocalyptic number.

722263639 is a deficient number, since it is larger than the sum of its proper divisors (1).

722263639 is an equidigital number, since it uses as much as digits as its factorization.

722263639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 40.

The square root of 722263639 is about 26874.9630511374. The cubic root of 722263639 is about 897.2192520960.

The spelling of 722263639 in words is "seven hundred twenty-two million, two hundred sixty-three thousand, six hundred thirty-nine".