12816165 has 32 divisors (see below), whose sum is σ = 21790080. Its totient is φ = 6414336.

The previous prime is 12816163. The next prime is 12816169. The reversal of 12816165 is 56161821.

12816165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12816165 - 2¹ = 12816163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54889 + ... + 55121.

It is an arithmetic number, because the mean of its divisors is an integer number (680940).

Almost surely, 2^12816165 is an apocalyptic number.

12816165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12816165 is a deficient number, since it is larger than the sum of its proper divisors (8973915).

12816165 is a wasteful number, since it uses less digits than its factorization.

12816165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 2880, while the sum is 30.

The square root of 12816165 is about 3579.9671786205. The cubic root of 12816165 is about 234.0198500218.

Adding to 12816165 its reverse (56161821), we get a palindrome (68977986).

The spelling of 12816165 in words is "twelve million, eight hundred sixteen thousand, one hundred sixty-five".