12469681 has 32 divisors (see below), whose sum is σ = 16070400. Its totient is φ = 9434880.

The previous prime is 12469651. The next prime is 12469697. The reversal of 12469681 is 18696421.

It is a happy number.

It is not a de Polignac number, because 12469681 - 2⁵ = 12469649 is a prime.

It is a super-2 number, since 2×12469681² = 310985888483522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12469681.

It is not an unprimeable number, because it can be changed into a prime (12469621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204391 + ... + 204451.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^12469681 is an apocalyptic number.

It is an amenable number.

12469681 is a deficient number, since it is larger than the sum of its proper divisors (3600719).

12469681 is a wasteful number, since it uses less digits than its factorization.

12469681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 20736, while the sum is 37.

The square root of 12469681 is about 3531.2435486667. The cubic root of 12469681 is about 231.8916519937.

The spelling of 12469681 in words is "twelve million, four hundred sixty-nine thousand, six hundred eighty-one".