723269664 has 72 divisors (see below), whose sum is σ = 2215024812. Its totient is φ = 222543360.

The previous prime is 723269663. The next prime is 723269779. The reversal of 723269664 is 466962327.

It can be written as a sum of positive squares in 2 ways, for example, as 723179664 + 90000 = 26892^2 + 300^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (723269663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92847 + ... + 100334.

Almost surely, 2^723269664 is an apocalyptic number.

It is an amenable number.

723269664 is an abundant number, since it is smaller than the sum of its proper divisors (1491755148).

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

723269664 is a wasteful number, since it uses less digits than its factorization.

723269664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193210 (or 193199 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 723269664 is about 26893.6733080477. The cubic root of 723269664 is about 897.6356310982.

The spelling of 723269664 in words is "seven hundred twenty-three million, two hundred sixty-nine thousand, six hundred sixty-four".