12853865 has 4 divisors (see below), whose sum is σ = 15424644. Its totient is φ = 10283088.

The previous prime is 12853847. The next prime is 12853877. The reversal of 12853865 is 56835821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9024016 + 3829849 = 3004^2 + 1957^2 .

It is a cyclic number.

It is not a de Polignac number, because 12853865 - 2¹⁰ = 12852841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285382 + ... + 1285391.

It is an arithmetic number, because the mean of its divisors is an integer number (3856161).

Almost surely, 2^12853865 is an apocalyptic number.

It is an amenable number.

12853865 is a deficient number, since it is larger than the sum of its proper divisors (2570779).

12853865 is an equidigital number, since it uses as much as digits as its factorization.

12853865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570778.

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

The square root of 12853865 is about 3585.2287235266. The cubic root of 12853865 is about 234.2490894670.

The spelling of 12853865 in words is "twelve million, eight hundred fifty-three thousand, eight hundred sixty-five".