12853681 has 4 divisors (see below), whose sum is σ = 13071600. Its totient is φ = 12635764.

The previous prime is 12853657. The next prime is 12853693. The reversal of 12853681 is 18635821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18635821 = 307 ⋅60703.

It is a cyclic number.

It is not a de Polignac number, because 12853681 - 2⁷ = 12853553 is a prime.

It is a super-2 number, since 2×12853681² = 330434230499522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12853601) 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, 108871 + ... + 108988.

It is an arithmetic number, because the mean of its divisors is an integer number (3267900).

Almost surely, 2^12853681 is an apocalyptic number.

It is an amenable number.

12853681 is a deficient number, since it is larger than the sum of its proper divisors (217919).

12853681 is an equidigital number, since it uses as much as digits as its factorization.

12853681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217918.

The product of its digits is 11520, while the sum is 34.

The square root of 12853681 is about 3585.2030625893. The cubic root of 12853681 is about 234.2479717218.

The spelling of 12853681 in words is "twelve million, eight hundred fifty-three thousand, six hundred eighty-one".