12662243 has 4 divisors (see below), whose sum is σ = 13813368. Its totient is φ = 11511120.

The previous prime is 12662239. The next prime is 12662257. The reversal of 12662243 is 34226621.

12662243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12662243 - 2² = 12662239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12662233) 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, 575546 + ... + 575567.

It is an arithmetic number, because the mean of its divisors is an integer number (3453342).

Almost surely, 2^12662243 is an apocalyptic number.

12662243 is a deficient number, since it is larger than the sum of its proper divisors (1151125).

12662243 is a wasteful number, since it uses less digits than its factorization.

12662243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151124.

The product of its digits is 3456, while the sum is 26.

The square root of 12662243 is about 3558.4045582255. The cubic root of 12662243 is about 233.0792156373.

Adding to 12662243 its reverse (34226621), we get a palindrome (46888864).

The spelling of 12662243 in words is "twelve million, six hundred sixty-two thousand, two hundred forty-three".