12684843 has 12 divisors (see below), whose sum is σ = 19001528. Its totient is φ = 8456400.

The previous prime is 12684829. The next prime is 12684869. The reversal of 12684843 is 34848621.

It is not a de Polignac number, because 12684843 - 2¹⁶ = 12619307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12684798 and 12684807.

It is not an unprimeable number, because it can be changed into a prime (12684043) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 25858 + ... + 26343.

Almost surely, 2^12684843 is an apocalyptic number.

12684843 is a deficient number, since it is larger than the sum of its proper divisors (6316685).

12684843 is an frugal number, since it uses more digits than its factorization.

12684843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52216 (or 52204 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 12684843 is about 3561.5787229823. The cubic root of 12684843 is about 233.2178024435.

The spelling of 12684843 in words is "twelve million, six hundred eighty-four thousand, eight hundred forty-three".