12766671 has 12 divisors (see below), whose sum is σ = 18495048. Its totient is φ = 8486064.

The previous prime is 12766669. The next prime is 12766681. The reversal of 12766671 is 17666721.

It is not a de Polignac number, because 12766671 - 2¹ = 12766669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12766681) 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, 1456 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (1541254).

Almost surely, 2^12766671 is an apocalyptic number.

12766671 is a deficient number, since it is larger than the sum of its proper divisors (5728377).

12766671 is a wasteful number, since it uses less digits than its factorization.

12766671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182 (or 4179 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 12766671 is about 3573.0478586215. The cubic root of 12766671 is about 233.7182121929.

It can be divided in two parts, 1 and 2766671, that added together give a palindrome (2766672).

The spelling of 12766671 in words is "twelve million, seven hundred sixty-six thousand, six hundred seventy-one".