12897105 has 48 divisors (see below), whose sum is σ = 23795520. Its totient is φ = 5913216.

The previous prime is 12897103. The next prime is 12897163. The reversal of 12897105 is 50179821.

12897105 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12897105 - 2¹ = 12897103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218566 + ... + 218624.

It is an arithmetic number, because the mean of its divisors is an integer number (495740).

Almost surely, 2^12897105 is an apocalyptic number.

12897105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12897105 is a deficient number, since it is larger than the sum of its proper divisors (10898415).

12897105 is a wasteful number, since it uses less digits than its factorization.

12897105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12897105 is about 3591.2539592738. The cubic root of 12897105 is about 234.5114643507.

The spelling of 12897105 in words is "twelve million, eight hundred ninety-seven thousand, one hundred five".