12670205 has 4 divisors (see below), whose sum is σ = 15204252. Its totient is φ = 10136160.

The previous prime is 12670183. The next prime is 12670211. The reversal of 12670205 is 50207621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50207621 = 431 ⋅116491.

It can be written as a sum of positive squares in 2 ways, for example, as 4108729 + 8561476 = 2027^2 + 2926^2 .

It is not a de Polignac number, because 12670205 - 2⁸ = 12669949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267016 + ... + 1267025.

It is an arithmetic number, because the mean of its divisors is an integer number (3801063).

Almost surely, 2^12670205 is an apocalyptic number.

It is an amenable number.

12670205 is a deficient number, since it is larger than the sum of its proper divisors (2534047).

12670205 is an equidigital number, since it uses as much as digits as its factorization.

12670205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534046.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12670205 is about 3559.5231422200. The cubic root of 12670205 is about 233.1280586919.

Adding to 12670205 its reverse (50207621), we get a palindrome (62877826).

The spelling of 12670205 in words is "twelve million, six hundred seventy thousand, two hundred five".