12927661 has 2 divisors, whose sum is σ = 12927662. Its totient is φ = 12927660.

The previous prime is 12927641. The next prime is 12927671. The reversal of 12927661 is 16672921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 2910436 = 3165^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 12927661 - 2⁹ = 12927149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12927631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6463830 + 6463831.

It is an arithmetic number, because the mean of its divisors is an integer number (6463831).

Almost surely, 2^12927661 is an apocalyptic number.

It is an amenable number.

12927661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12927661 is an equidigital number, since it uses as much as digits as its factorization.

12927661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 12927661 is about 3595.5056668013. The cubic root of 12927661 is about 234.6965208858.

The spelling of 12927661 in words is "twelve million, nine hundred twenty-seven thousand, six hundred sixty-one".