722666833560 has 640 divisors, whose sum is σ = 2819392773120. Its totient is φ = 162611463168.

The previous prime is 722666833549. The next prime is 722666833613. The reversal of 722666833560 is 65338666227.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 722666833497 and 722666833506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 747328197 + ... + 747329163.

It is an arithmetic number, because the mean of its divisors is an integer number (4405301208).

Almost surely, 2^722666833560 is an apocalyptic number.

722666833560 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722666833560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409696386560).

722666833560 is an abundant number, since it is smaller than the sum of its proper divisors (2096725939560).

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

722666833560 is a wasteful number, since it uses less digits than its factorization.

722666833560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 722666833560 in words is "seven hundred twenty-two billion, six hundred sixty-six million, eight hundred thirty-three thousand, five hundred sixty".