12686271 has 16 divisors (see below), whose sum is σ = 19009536. Its totient is φ = 7466976.

The previous prime is 12686269. The next prime is 12686299. The reversal of 12686271 is 17268621.

It is not a de Polignac number, because 12686271 - 2¹ = 12686269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6175 + ... + 7968.

It is an arithmetic number, because the mean of its divisors is an integer number (1188096).

Almost surely, 2^12686271 is an apocalyptic number.

12686271 is a deficient number, since it is larger than the sum of its proper divisors (6323265).

12686271 is a wasteful number, since it uses less digits than its factorization.

12686271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14182.

The product of its digits is 8064, while the sum is 33.

The square root of 12686271 is about 3561.7791902363. The cubic root of 12686271 is about 233.2265536365.

The spelling of 12686271 in words is "twelve million, six hundred eighty-six thousand, two hundred seventy-one".