12684845 has 16 divisors (see below), whose sum is σ = 16111872. Its totient is φ = 9567360.

The previous prime is 12684829. The next prime is 12684869. The reversal of 12684845 is 54848621.

It is a happy number.

12684845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12684845 - 2⁴ = 12684829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12684799 and 12684808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7640 + ... + 9150.

It is an arithmetic number, because the mean of its divisors is an integer number (1006992).

Almost surely, 2^12684845 is an apocalyptic number.

It is an amenable number.

12684845 is a deficient number, since it is larger than the sum of its proper divisors (3427027).

12684845 is a wasteful number, since it uses less digits than its factorization.

12684845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612.

The product of its digits is 61440, while the sum is 38.

The square root of 12684845 is about 3561.5790037566. The cubic root of 12684845 is about 233.2178147006.

The spelling of 12684845 in words is "twelve million, six hundred eighty-four thousand, eight hundred forty-five".