722521564 has 12 divisors (see below), whose sum is σ = 1269935800. Its totient is φ = 359682768.

The previous prime is 722521559. The next prime is 722521567. The reversal of 722521564 is 465125227.

722521564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722521567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393474 + ... + 395305.

Almost surely, 2^722521564 is an apocalyptic number.

It is an amenable number.

722521564 is a deficient number, since it is larger than the sum of its proper divisors (547414236).

722521564 is a wasteful number, since it uses less digits than its factorization.

722521564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789012 (or 789010 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 722521564 is about 26879.7612340586. The cubic root of 722521564 is about 897.3260403110.

The spelling of 722521564 in words is "seven hundred twenty-two million, five hundred twenty-one thousand, five hundred sixty-four".