12729671 has 2 divisors, whose sum is σ = 12729672. Its totient is φ = 12729670.

The previous prime is 12729653. The next prime is 12729679. The reversal of 12729671 is 17692721.

12729671 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12729671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12729679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364835 + 6364836.

It is an arithmetic number, because the mean of its divisors is an integer number (6364836).

Almost surely, 2^12729671 is an apocalyptic number.

12729671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12729671 is an equidigital number, since it uses as much as digits as its factorization.

12729671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 12729671 is about 3567.8664492943. The cubic root of 12729671 is about 233.4922085783.

The spelling of 12729671 in words is "twelve million, seven hundred twenty-nine thousand, six hundred seventy-one".