12208687 has 4 divisors (see below), whose sum is σ = 12219336. Its totient is φ = 12198040.

The previous prime is 12208667. The next prime is 12208733. The reversal of 12208687 is 78680221.

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: 78680221 = 6037 ⋅13033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12208687 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 (12208627) by changing a digit.

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, 3364 + ... + 5977.

It is an arithmetic number, because the mean of its divisors is an integer number (3054834).

Almost surely, 2^12208687 is an apocalyptic number.

12208687 is a deficient number, since it is larger than the sum of its proper divisors (10649).

12208687 is an equidigital number, since it uses as much as digits as its factorization.

12208687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 12208687 is about 3494.0931584604. The cubic root of 12208687 is about 230.2623785797.

The spelling of 12208687 in words is "twelve million, two hundred eight thousand, six hundred eighty-seven".