12681671 has 8 divisors (see below), whose sum is σ = 13690080. Its totient is φ = 11711392.

The previous prime is 12681631. The next prime is 12681703. The reversal of 12681671 is 17618621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12681671 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8840 + ... + 10173.

It is an arithmetic number, because the mean of its divisors is an integer number (1711260).

Almost surely, 2^12681671 is an apocalyptic number.

12681671 is a deficient number, since it is larger than the sum of its proper divisors (1008409).

12681671 is a wasteful number, since it uses less digits than its factorization.

12681671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19065.

The product of its digits is 4032, while the sum is 32.

The square root of 12681671 is about 3561.1333869991. The cubic root of 12681671 is about 233.1983611691.

The spelling of 12681671 in words is "twelve million, six hundred eighty-one thousand, six hundred seventy-one".