12866853 has 4 divisors (see below), whose sum is σ = 17155808. Its totient is φ = 8577900.

The previous prime is 12866851. The next prime is 12866869. The reversal of 12866853 is 35866821.

It is a happy number.

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.

It is not a de Polignac number, because 12866853 - 2¹ = 12866851 is a prime.

It is a super-2 number, since 2×12866853² = 331111812247218, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866851) 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, 2144473 + ... + 2144478.

It is an arithmetic number, because the mean of its divisors is an integer number (4288952).

Almost surely, 2^12866853 is an apocalyptic number.

It is an amenable number.

12866853 is a deficient number, since it is larger than the sum of its proper divisors (4288955).

12866853 is an equidigital number, since it uses as much as digits as its factorization.

12866853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288954.

The product of its digits is 69120, while the sum is 39.

The square root of 12866853 is about 3587.0395871805. The cubic root of 12866853 is about 234.3279607643.

The spelling of 12866853 in words is "twelve million, eight hundred sixty-six thousand, eight hundred fifty-three".