723818065 has 8 divisors (see below), whose sum is σ = 871674408. Its totient is φ = 576992640.

The previous prime is 723818033. The next prime is 723818071. The reversal of 723818065 is 560818327.

It can be written as a sum of positive squares in 4 ways, for example, as 638401 + 723179664 = 799^2 + 26892^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 723818065 - 2⁵ = 723818033 is a prime.

It is a Duffinian 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, 256182 + ... + 258991.

It is an arithmetic number, because the mean of its divisors is an integer number (108959301).

Almost surely, 2^723818065 is an apocalyptic number.

It is an amenable number.

723818065 is a deficient number, since it is larger than the sum of its proper divisors (147856343).

723818065 is a wasteful number, since it uses less digits than its factorization.

723818065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515459.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 723818065 is about 26903.8671012180. The cubic root of 723818065 is about 897.8624436500.

The spelling of 723818065 in words is "seven hundred twenty-three million, eight hundred eighteen thousand, sixty-five".