722588688 has 120 divisors (see below), whose sum is σ = 2154251008. Its totient is φ = 234306432.

The previous prime is 722588683. The next prime is 722588707. The reversal of 722588688 is 886885227.

It is a super-2 number, since 2×722588688² = 1044268824051122688, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722588681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141345 + ... + 146367.

Almost surely, 2^722588688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722588688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077125504).

722588688 is an abundant number, since it is smaller than the sum of its proper divisors (1431662320).

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

722588688 is a wasteful number, since it uses less digits than its factorization.

722588688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083 (or 5065 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 722588688 is about 26881.0098024609. The cubic root of 722588688 is about 897.3538273701.

The spelling of 722588688 in words is "seven hundred twenty-two million, five hundred eighty-eight thousand, six hundred eighty-eight".