12646 has 4 divisors (see below), whose sum is σ = 18972. Its totient is φ = 6322.

The previous prime is 12641. The next prime is 12647. The reversal of 12646 is 64621.

12646 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 plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3160 + ... + 3163.

It is an arithmetic number, because the mean of its divisors is an integer number (4743).

2¹²⁶⁴⁶ is an apocalyptic number.

12646 is a deficient number, since it is larger than the sum of its proper divisors (6326).

12646 is an equidigital number, since it uses as much as digits as its factorization.

12646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325.

The product of its digits is 288, while the sum is 19.

The square root of 12646 is about 112.4544352171. The cubic root of 12646 is about 23.2979509087.

The spelling of 12646 in words is "twelve thousand, six hundred forty-six".