722456064 has 160 divisors (see below), whose sum is σ = 2333422080. Its totient is φ = 218880000.

The previous prime is 722456011. The next prime is 722456069. The reversal of 722456064 is 460654227.

722456064 is a `hidden beast` number, since 7 + 2 + 2 + 45 + 606 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722456069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149689 + ... + 154439.

It is an arithmetic number, because the mean of its divisors is an integer number (14583888).

Almost surely, 2^722456064 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 722456064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166711040).

722456064 is an abundant number, since it is smaller than the sum of its proper divisors (1610966016).

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

722456064 is a wasteful number, since it uses less digits than its factorization.

722456064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789 (or 4767 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 722456064 is about 26878.5428176455. The cubic root of 722456064 is about 897.2989238739.

The spelling of 722456064 in words is "seven hundred twenty-two million, four hundred fifty-six thousand, sixty-four".