722695168 has 66 divisors (see below), whose sum is σ = 1562520134. Its totient is φ = 332120064.

The previous prime is 722695123. The next prime is 722695199. The reversal of 722695168 is 861596227.

It can be written as a sum of positive squares in 3 ways, for example, as 10445824 + 712249344 = 3232^2 + 26688^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3101580 + ... + 3101812.

Almost surely, 2^722695168 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 722695168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781260067).

722695168 is an abundant number, since it is smaller than the sum of its proper divisors (839824966).

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

722695168 is an equidigital number, since it uses as much as digits as its factorization.

722695168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 248 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 722695168 is about 26882.9903098595. The cubic root of 722695168 is about 897.3979029482.

The spelling of 722695168 in words is "seven hundred twenty-two million, six hundred ninety-five thousand, one hundred sixty-eight".