12661373 has 2 divisors, whose sum is σ = 12661374. Its totient is φ = 12661372.

The previous prime is 12661357. The next prime is 12661381. The reversal of 12661373 is 37316621.

12661373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 2079364 = 3253^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 12661373 - 2⁴ = 12661357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12661303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330686 + 6330687.

It is an arithmetic number, because the mean of its divisors is an integer number (6330687).

Almost surely, 2^12661373 is an apocalyptic number.

It is an amenable number.

12661373 is a deficient number, since it is larger than the sum of its proper divisors (1).

12661373 is an equidigital number, since it uses as much as digits as its factorization.

12661373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 12661373 is about 3558.2823103290. The cubic root of 12661373 is about 233.0738773634.

Adding to 12661373 its reverse (37316621), we get a palindrome (49977994).

The spelling of 12661373 in words is "twelve million, six hundred sixty-one thousand, three hundred seventy-three".