722503531660 has 24 divisors (see below), whose sum is σ = 1517344758720. Its totient is φ = 288984776064.

The previous prime is 722503531577. The next prime is 722503531681. The reversal of 722503531660 is 66135305227.

It is a super-2 number, since 2×722503531660² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 680649 + ... + 1381408.

It is an arithmetic number, because the mean of its divisors is an integer number (63222698280).

Almost surely, 2^722503531660 is an apocalyptic number.

It is an amenable number.

722503531660 is an abundant number, since it is smaller than the sum of its proper divisors (794841227060).

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

722503531660 is a wasteful number, since it uses less digits than its factorization.

722503531660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079585 (or 2079583 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

Adding to 722503531660 its reverse (66135305227), we get a palindrome (788638836887).

The spelling of 722503531660 in words is "seven hundred twenty-two billion, five hundred three million, five hundred thirty-one thousand, six hundred sixty".