12665849 has 8 divisors (see below), whose sum is σ = 14560320. Its totient is φ = 10792656.

The previous prime is 12665839. The next prime is 12665869. The reversal of 12665849 is 94856621.

It is a happy number.

12665849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12665849 - 2⁸ = 12665593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12665839) 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, 4019 + ... + 6440.

It is an arithmetic number, because the mean of its divisors is an integer number (1820040).

Almost surely, 2^12665849 is an apocalyptic number.

It is an amenable number.

12665849 is a deficient number, since it is larger than the sum of its proper divisors (1894471).

12665849 is a wasteful number, since it uses less digits than its factorization.

12665849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10639.

The product of its digits is 103680, while the sum is 41.

The square root of 12665849 is about 3558.9112099068. The cubic root of 12665849 is about 233.1013392552.

The spelling of 12665849 in words is "twelve million, six hundred sixty-five thousand, eight hundred forty-nine".