12671387 has 2 divisors, whose sum is σ = 12671388. Its totient is φ = 12671386.

The previous prime is 12671383. The next prime is 12671389. The reversal of 12671387 is 78317621.

12671387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78317621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12671387 - 2² = 12671383 is a prime.

Together with 12671389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12671381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6335693 + 6335694.

It is an arithmetic number, because the mean of its divisors is an integer number (6335694).

Almost surely, 2^12671387 is an apocalyptic number.

12671387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12671387 is an equidigital number, since it uses as much as digits as its factorization.

12671387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 12671387 is about 3559.6891718239. The cubic root of 12671387 is about 233.1353079510.

The spelling of 12671387 in words is "twelve million, six hundred seventy-one thousand, three hundred eighty-seven".