722651772 has 24 divisors (see below), whose sum is σ = 1686697600. Its totient is φ = 240811056.

The previous prime is 722651753. The next prime is 722651777. The reversal of 722651772 is 277156227.

722651772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 722651772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722651777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45129 + ... + 59007.

Almost surely, 2^722651772 is an apocalyptic number.

It is an amenable number.

722651772 is an abundant number, since it is smaller than the sum of its proper divisors (964045828).

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

722651772 is a wasteful number, since it uses less digits than its factorization.

722651772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18225 (or 18223 counting only the distinct ones).

The product of its digits is 82320, while the sum is 39.

The square root of 722651772 is about 26882.1831702710. The cubic root of 722651772 is about 897.3799404376.

The spelling of 722651772 in words is "seven hundred twenty-two million, six hundred fifty-one thousand, seven hundred seventy-two".