12908165 has 4 divisors (see below), whose sum is σ = 15489804. Its totient is φ = 10326528.

The previous prime is 12908143. The next prime is 12908167. The reversal of 12908165 is 56180921.

12908165 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, and also an emirpimes, since its reverse is a distinct semiprime: 56180921 = 59 ⋅952219.

It can be written as a sum of positive squares in 2 ways, for example, as 5943844 + 6964321 = 2438^2 + 2639^2 .

It is a cyclic number.

It is not a de Polignac number, because 12908165 - 2⁶ = 12908101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12908167) 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, 1290812 + ... + 1290821.

It is an arithmetic number, because the mean of its divisors is an integer number (3872451).

Almost surely, 2^12908165 is an apocalyptic number.

It is an amenable number.

12908165 is a deficient number, since it is larger than the sum of its proper divisors (2581639).

12908165 is an equidigital number, since it uses as much as digits as its factorization.

12908165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581638.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12908165 is about 3592.7934814013. The cubic root of 12908165 is about 234.5784808306.

The spelling of 12908165 in words is "twelve million, nine hundred eight thousand, one hundred sixty-five".