12864847 has 4 divisors (see below), whose sum is σ = 12873016. Its totient is φ = 12856680.

The previous prime is 12864833. The next prime is 12864851. The reversal of 12864847 is 74846821.

12864847 is digitally balanced in base 2, 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12864847 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 (12864827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (3218254).

Almost surely, 2^12864847 is an apocalyptic number.

12864847 is a deficient number, since it is larger than the sum of its proper divisors (8169).

12864847 is an equidigital number, since it uses as much as digits as its factorization.

12864847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8168.

The product of its digits is 86016, while the sum is 40.

The square root of 12864847 is about 3586.7599585141. The cubic root of 12864847 is about 234.3157825386.

The spelling of 12864847 in words is "twelve million, eight hundred sixty-four thousand, eight hundred forty-seven".