12688271 has 4 divisors (see below), whose sum is σ = 12741600. Its totient is φ = 12634944.

The previous prime is 12688243. The next prime is 12688297. The reversal of 12688271 is 17288621.

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

It is a cyclic number.

It is not a de Polignac number, because 12688271 - 2¹⁴ = 12671887 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 (12688201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26306 + ... + 26783.

It is an arithmetic number, because the mean of its divisors is an integer number (3185400).

Almost surely, 2^12688271 is an apocalyptic number.

12688271 is a deficient number, since it is larger than the sum of its proper divisors (53329).

12688271 is an equidigital number, since it uses as much as digits as its factorization.

12688271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53328.

The product of its digits is 10752, while the sum is 35.

The square root of 12688271 is about 3562.0599377327. The cubic root of 12688271 is about 233.2388091053.

The spelling of 12688271 in words is "twelve million, six hundred eighty-eight thousand, two hundred seventy-one".