12306641 has 4 divisors (see below), whose sum is σ = 12334500. Its totient is φ = 12278784.

The previous prime is 12306631. The next prime is 12306649. The reversal of 12306641 is 14660321.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3330625 + 8976016 = 1825^2 + 2996^2 .

It is a cyclic number.

It is not a de Polignac number, because 12306641 - 2⁶ = 12306577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12306649) 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, 13256 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (3083625).

Almost surely, 2^12306641 is an apocalyptic number.

It is an amenable number.

12306641 is a deficient number, since it is larger than the sum of its proper divisors (27859).

12306641 is an equidigital number, since it uses as much as digits as its factorization.

12306641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27858.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12306641 is about 3508.0822396289. The cubic root of 12306641 is about 230.8765605494.

Adding to 12306641 its reverse (14660321), we get a palindrome (26966962).

The spelling of 12306641 in words is "twelve million, three hundred six thousand, six hundred forty-one".