722644900 has 36 divisors (see below), whose sum is σ = 1583687700. Its totient is φ = 286192000.

The previous prime is 722644873. The next prime is 722644903. The reversal of 722644900 is 9446227.

722644900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3976036 + 718668864 = 1994^2 + 26808^2 .

It is not an unprimeable number, because it can be changed into a prime (722644903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25675 + ... + 45874.

It is an arithmetic number, because the mean of its divisors is an integer number (43991325).

Almost surely, 2^722644900 is an apocalyptic number.

It is an amenable number.

722644900 is an abundant number, since it is smaller than the sum of its proper divisors (861042800).

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

722644900 is a wasteful number, since it uses less digits than its factorization.

722644900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71664 (or 71657 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 722644900 is about 26882.0553529673. The cubic root of 722644900 is about 897.3770959073.

The spelling of 722644900 in words is "seven hundred twenty-two million, six hundred forty-four thousand, nine hundred".