722085630689 has 2 divisors, whose sum is σ = 722085630690. Its totient is φ = 722085630688.

The previous prime is 722085630671. The next prime is 722085630713. The reversal of 722085630689 is 986036580227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 695714469025 + 26371161664 = 834095^2 + 162392^2 .

It is a cyclic number.

It is not a de Polignac number, because 722085630689 - 2³² = 717790663393 is a prime.

It is a super-2 number, since 2×722085630689² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (722085630589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361042815344 + 361042815345.

It is an arithmetic number, because the mean of its divisors is an integer number (361042815345).

Almost surely, 2^722085630689 is an apocalyptic number.

It is an amenable number.

722085630689 is a deficient number, since it is larger than the sum of its proper divisors (1).

722085630689 is an equidigital number, since it uses as much as digits as its factorization.

722085630689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 722085630689 in words is "seven hundred twenty-two billion, eighty-five million, six hundred thirty thousand, six hundred eighty-nine".