722973789720 has 384 divisors, whose sum is σ = 2991619612800. Its totient is φ = 147279347712.

The previous prime is 722973789709. The next prime is 722973789817. The reversal of 722973789720 is 27987379227.

722973789720 is a `hidden beast` number, since 72 + 2 + 97 + 378 + 97 + 20 = 666.

It is a super-2 number, since 2×722973789720² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 569544 + ... + 1330536.

It is an arithmetic number, because the mean of its divisors is an integer number (7790676075).

Almost surely, 2^722973789720 is an apocalyptic number.

722973789720 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 722973789720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495809806400).

722973789720 is an abundant number, since it is smaller than the sum of its proper divisors (2268645823080).

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

722973789720 is a wasteful number, since it uses less digits than its factorization.

722973789720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761059 (or 761052 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 63.

The spelling of 722973789720 in words is "seven hundred twenty-two billion, nine hundred seventy-three million, seven hundred eighty-nine thousand, seven hundred twenty".