12661741 has 2 divisors, whose sum is σ = 12661742. Its totient is φ = 12661740.

The previous prime is 12661739. The next prime is 12661769. The reversal of 12661741 is 14716621.

It is an a-pointer prime, because the next prime (12661769) can be obtained adding 12661741 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12638025 + 23716 = 3555^2 + 154^2 .

It is a cyclic number.

It is not a de Polignac number, because 12661741 - 2¹ = 12661739 is a prime.

Together with 12661739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12661721) 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 as a sum of consecutive naturals, namely, 6330870 + 6330871.

It is an arithmetic number, because the mean of its divisors is an integer number (6330871).

Almost surely, 2^12661741 is an apocalyptic number.

It is an amenable number.

12661741 is a deficient number, since it is larger than the sum of its proper divisors (1).

12661741 is an equidigital number, since it uses as much as digits as its factorization.

12661741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 12661741 is about 3558.3340202966. The cubic root of 12661741 is about 233.0761354217.

The spelling of 12661741 in words is "twelve million, six hundred sixty-one thousand, seven hundred forty-one".