12771671 has 12 divisors (see below), whose sum is σ = 14284200. Its totient is φ = 11407440.

The previous prime is 12771653. The next prime is 12771679. The reversal of 12771671 is 17617721.

It is a happy number.

12771671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12771671 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 (12771679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6245 + ... + 8033.

It is an arithmetic number, because the mean of its divisors is an integer number (1190350).

Almost surely, 2^12771671 is an apocalyptic number.

12771671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12771671 is a deficient number, since it is larger than the sum of its proper divisors (1512529).

12771671 is a wasteful number, since it uses less digits than its factorization.

12771671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870 (or 1859 counting only the distinct ones).

The product of its digits is 4116, while the sum is 32.

The square root of 12771671 is about 3573.7474728917. The cubic root of 12771671 is about 233.7487197162.

The spelling of 12771671 in words is "twelve million, seven hundred seventy-one thousand, six hundred seventy-one".