12868105 has 4 divisors (see below), whose sum is σ = 15441732. Its totient is φ = 10294480.

The previous prime is 12868103. The next prime is 12868123. The reversal of 12868105 is 50186821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50186821 = 6983 ⋅7187.

It can be written as a sum of positive squares in 2 ways, for example, as 7573504 + 5294601 = 2752^2 + 2301^2 .

It is not a de Polignac number, because 12868105 - 2¹ = 12868103 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12868103) 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, 1286806 + ... + 1286815.

It is an arithmetic number, because the mean of its divisors is an integer number (3860433).

Almost surely, 2^12868105 is an apocalyptic number.

It is an amenable number.

12868105 is a deficient number, since it is larger than the sum of its proper divisors (2573627).

12868105 is an equidigital number, since it uses as much as digits as its factorization.

12868105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573626.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 12868105 is about 3587.2141001061. The cubic root of 12868105 is about 234.3355608897.

The spelling of 12868105 in words is "twelve million, eight hundred sixty-eight thousand, one hundred five".