865799073 has 12 divisors (see below), whose sum is σ = 1251320980. Its totient is φ = 576866016.

The previous prime is 865799071. The next prime is 865799083. The reversal of 865799073 is 370997568.

865799073 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 2 ways, for example, as 727219089 + 138579984 = 26967^2 + 11772^2 .

It is not a de Polignac number, because 865799073 - 2¹ = 865799071 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (865799071) 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, 10786 + ... + 42987.

Almost surely, 2^865799073 is an apocalyptic number.

It is an amenable number.

865799073 is a deficient number, since it is larger than the sum of its proper divisors (385521907).

865799073 is a wasteful number, since it uses less digits than its factorization.

865799073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55568 (or 55565 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 865799073 is about 29424.4638523797. The cubic root of 865799073 is about 953.1012493417.

The spelling of 865799073 in words is "eight hundred sixty-five million, seven hundred ninety-nine thousand, seventy-three".