722648784 has 240 divisors, whose sum is σ = 2343974976. Its totient is φ = 189911040.

The previous prime is 722648779. The next prime is 722648803. The reversal of 722648784 is 487846227.

It is a happy number.

722648784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1283287 + ... + 1283849.

Almost surely, 2^722648784 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 722648784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171987488).

722648784 is an abundant number, since it is smaller than the sum of its proper divisors (1621326192).

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

722648784 is a wasteful number, since it uses less digits than its factorization.

722648784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 609 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 722648784 is about 26882.1275943702. The cubic root of 722648784 is about 897.3787036155.

The spelling of 722648784 in words is "seven hundred twenty-two million, six hundred forty-eight thousand, seven hundred eighty-four".