12369681 has 12 divisors (see below), whose sum is σ = 18283408. Its totient is φ = 8054424.

The previous prime is 12369677. The next prime is 12369719. The reversal of 12369681 is 18696321.

It is not a de Polignac number, because 12369681 - 2² = 12369677 is a prime.

It is a super-2 number, since 2×12369681² = 306018016083522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12369671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15595 + ... + 16368.

Almost surely, 2^12369681 is an apocalyptic number.

It is an amenable number.

12369681 is a deficient number, since it is larger than the sum of its proper divisors (5913727).

12369681 is a wasteful number, since it uses less digits than its factorization.

12369681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32012 (or 32009 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12369681 is about 3517.0557288732. The cubic root of 12369681 is about 231.2701062625.

The spelling of 12369681 in words is "twelve million, three hundred sixty-nine thousand, six hundred eighty-one".