722597938660 has 24 divisors (see below), whose sum is σ = 1634183031096. Its totient is φ = 266805392640.

The previous prime is 722597938639. The next prime is 722597938691. The reversal of 722597938660 is 66839795227.

It can be written as a sum of positive squares in 4 ways, for example, as 137125052416 + 585472886244 = 370304^2 + 765162^2 .

It is a super-2 number, since 2×722597938660² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 722597938592 and 722597938601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1389611161 + ... + 1389611680.

It is an arithmetic number, because the mean of its divisors is an integer number (68090959629).

Almost surely, 2^722597938660 is an apocalyptic number.

It is an amenable number.

722597938660 is an abundant number, since it is smaller than the sum of its proper divisors (911585092436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722597938660 is a wasteful number, since it uses less digits than its factorization.

722597938660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779222863 (or 2779222861 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 64.

The spelling of 722597938660 in words is "seven hundred twenty-two billion, five hundred ninety-seven million, nine hundred thirty-eight thousand, six hundred sixty".