12867681 has 8 divisors (see below), whose sum is σ = 17216640. Its totient is φ = 8548592.

The previous prime is 12867667. The next prime is 12867683. The reversal of 12867681 is 18676821.

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

It is a cyclic number.

It is not a de Polignac number, because 12867681 - 2¹⁹ = 12343393 is a prime.

It is a super-2 number, since 2×12867681² = 331154428635522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12867683) 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, 6441 + ... + 8198.

It is an arithmetic number, because the mean of its divisors is an integer number (2152080).

Almost surely, 2^12867681 is an apocalyptic number.

It is an amenable number.

12867681 is a deficient number, since it is larger than the sum of its proper divisors (4348959).

12867681 is a wasteful number, since it uses less digits than its factorization.

12867681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14935.

The product of its digits is 32256, while the sum is 39.

The square root of 12867681 is about 3587.1550008328. The cubic root of 12867681 is about 234.3329871005.

It can be divided in two parts, 1 and 2867681, that added together give a palindrome (2867682).

The spelling of 12867681 in words is "twelve million, eight hundred sixty-seven thousand, six hundred eighty-one".