722634720 has 48 divisors (see below), whose sum is σ = 2276300880. Its totient is φ = 192702464.

The previous prime is 722634659. The next prime is 722634739. The reversal of 722634720 is 27436227.

722634720 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 752265 + ... + 753224.

It is an arithmetic number, because the mean of its divisors is an integer number (47422935).

Almost surely, 2^722634720 is an apocalyptic number.

It is an amenable number.

722634720 is an abundant number, since it is smaller than the sum of its proper divisors (1553666160).

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

722634720 is a wasteful number, since it uses less digits than its factorization.

722634720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505507 (or 1505499 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 722634720 is about 26881.8660066596. The cubic root of 722634720 is about 897.3728820619.

The spelling of 722634720 in words is "seven hundred twenty-two million, six hundred thirty-four thousand, seven hundred twenty".