12845 has 8 divisors (see below), whose sum is σ = 17664. Its totient is φ = 8784.

The previous prime is 12841. The next prime is 12853. The reversal of 12845 is 54821.

12845 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 a cyclic number.

It is not a de Polignac number, because 12845 - 2² = 12841 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149 + ... + 218.

It is an arithmetic number, because the mean of its divisors is an integer number (2208).

2¹²⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

12845 is a deficient number, since it is larger than the sum of its proper divisors (4819).

12845 is an equidigital number, since it uses as much as digits as its factorization.

12845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 320, while the sum is 20.

The square root of 12845 is about 113.3357842872. The cubic root of 12845 is about 23.4195225104.

The spelling of 12845 in words is "twelve thousand, eight hundred forty-five".