804785165 has 4 divisors (see below), whose sum is σ = 965742204. Its totient is φ = 643828128.

The previous prime is 804785131. The next prime is 804785167. The reversal of 804785165 is 561587408.

It is a happy number.

804785165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261242569 + 543542596 = 16163^2 + 23314^2 .

It is a cyclic number.

It is not a de Polignac number, because 804785165 - 2²⁰ = 803736589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804785167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80478512 + ... + 80478521.

It is an arithmetic number, because the mean of its divisors is an integer number (241435551).

Almost surely, 2^804785165 is an apocalyptic number.

It is an amenable number.

804785165 is a deficient number, since it is larger than the sum of its proper divisors (160957039).

804785165 is a wasteful number, since it uses less digits than its factorization.

804785165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160957038.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 804785165 is about 28368.7356961850. The cubic root of 804785165 is about 930.1649859524.

The spelling of 804785165 in words is "eight hundred four million, seven hundred eighty-five thousand, one hundred sixty-five".