722297714161 has 9 divisors (see below), whose sum is σ = 767300463201. Its totient is φ = 679796015232.

The previous prime is 722297714123. The next prime is 722297714207. The reversal of 722297714161 is 161417792227.

The square root of 722297714161 is 849881.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 143967883761 + 578329830400 = 379431^2 + 760480^2 .

It is not a de Polignac number, because 722297714161 - 2¹¹ = 722297712113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722298714161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14422981 + ... + 14472973.

Almost surely, 2^722297714161 is an apocalyptic number.

722297714161 is the 849881-st square number.

722297714161 is the 424941-st centered octagonal number.

It is an amenable number.

722297714161 is a deficient number, since it is larger than the sum of its proper divisors (45002749040).

722297714161 is an frugal number, since it uses more digits than its factorization.

722297714161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100020 (or 50010 counting only the distinct ones).

The product of its digits is 592704, while the sum is 49.

Multiplying 722297714161 by its sum of digits (49), we get a square (35392587993889 = 5949167²).

The spelling of 722297714161 in words is "seven hundred twenty-two billion, two hundred ninety-seven million, seven hundred fourteen thousand, one hundred sixty-one".