12823165 has 4 divisors (see below), whose sum is σ = 15387804. Its totient is φ = 10258528.

The previous prime is 12823147. The next prime is 12823177. The reversal of 12823165 is 56132821.

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 4214809 + 8608356 = 2053^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 12823165 - 2¹¹ = 12821117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282312 + ... + 1282321.

It is an arithmetic number, because the mean of its divisors is an integer number (3846951).

Almost surely, 2^12823165 is an apocalyptic number.

It is an amenable number.

12823165 is a deficient number, since it is larger than the sum of its proper divisors (2564639).

12823165 is an equidigital number, since it uses as much as digits as its factorization.

12823165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564638.

The product of its digits is 2880, while the sum is 28.

The square root of 12823165 is about 3580.9447077552. The cubic root of 12823165 is about 234.0624483290.

Adding to 12823165 its reverse (56132821), we get a palindrome (68955986).

The spelling of 12823165 in words is "twelve million, eight hundred twenty-three thousand, one hundred sixty-five".