12685853 has 4 divisors (see below), whose sum is σ = 12692988. Its totient is φ = 12678720.

The previous prime is 12685837. The next prime is 12685861. The reversal of 12685853 is 35858621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35858621 = 71 ⋅505051.

It can be written as a sum of positive squares in 2 ways, for example, as 10067929 + 2617924 = 3173^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 12685853 - 2⁴ = 12685837 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 (12685873) 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, 1493 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (3173247).

Almost surely, 2^12685853 is an apocalyptic number.

It is an amenable number.

12685853 is a deficient number, since it is larger than the sum of its proper divisors (7135).

12685853 is an equidigital number, since it uses as much as digits as its factorization.

12685853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134.

The product of its digits is 57600, while the sum is 38.

The square root of 12685853 is about 3561.7205112136. The cubic root of 12685853 is about 233.2239920808.

The spelling of 12685853 in words is "twelve million, six hundred eighty-five thousand, eight hundred fifty-three".