12671689 has 16 divisors (see below), whose sum is σ = 14100480. Its totient is φ = 11333520.

The previous prime is 12671683. The next prime is 12671719. The reversal of 12671689 is 98617621.

It is a cyclic number.

It is not a de Polignac number, because 12671689 - 2⁹ = 12671177 is a prime.

It is a super-2 number, since 2×12671689² = 321143404225442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12671683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46624 + ... + 46894.

It is an arithmetic number, because the mean of its divisors is an integer number (881280).

Almost surely, 2^12671689 is an apocalyptic number.

12671689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12671689 is a deficient number, since it is larger than the sum of its proper divisors (1428791).

12671689 is a wasteful number, since it uses less digits than its factorization.

12671689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its digits is 36288, while the sum is 40.

The square root of 12671689 is about 3559.7315910051. The cubic root of 12671689 is about 233.1371600583.

The spelling of 12671689 in words is "twelve million, six hundred seventy-one thousand, six hundred eighty-nine".