12447697 has 4 divisors (see below), whose sum is σ = 12487780. Its totient is φ = 12407616.

The previous prime is 12447667. The next prime is 12447703. The reversal of 12447697 is 79674421.

12447697 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 11806096 = 801^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 12447697 - 2⁷ = 12447569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12447667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19572 + ... + 20197.

It is an arithmetic number, because the mean of its divisors is an integer number (3121945).

Almost surely, 2^12447697 is an apocalyptic number.

It is an amenable number.

12447697 is a deficient number, since it is larger than the sum of its proper divisors (40083).

12447697 is an equidigital number, since it uses as much as digits as its factorization.

12447697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40082.

The product of its digits is 84672, while the sum is 40.

The square root of 12447697 is about 3528.1293910513. The cubic root of 12447697 is about 231.7552971322.

The spelling of 12447697 in words is "twelve million, four hundred forty-seven thousand, six hundred ninety-seven".