722677824 has 126 divisors (see below), whose sum is σ = 2277075710. Its totient is φ = 218972160.

The previous prime is 722677801. The next prime is 722677829. The reversal of 722677824 is 428776227.

It can be written as a sum of positive squares in only one way, i.e., 446054400 + 276623424 = 21120^2 + 16632^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 722677824.

It is not an unprimeable number, because it can be changed into a prime (722677829) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 64512 + ... + 74880.

Almost surely, 2^722677824 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 722677824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138537855).

722677824 is an abundant number, since it is smaller than the sum of its proper divisors (1554397886).

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

722677824 is a wasteful number, since it uses less digits than its factorization.

722677824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409 (or 10385 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 722677824 is about 26882.6677247627. The cubic root of 722677824 is about 897.3907239907.

The spelling of 722677824 in words is "seven hundred twenty-two million, six hundred seventy-seven thousand, eight hundred twenty-four".