12606161 has 2 divisors, whose sum is σ = 12606162. Its totient is φ = 12606160.

The previous prime is 12606137. The next prime is 12606169. The reversal of 12606161 is 16160621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12559936 + 46225 = 3544^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 12606161 - 2¹⁰ = 12605137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12606169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6303080 + 6303081.

It is an arithmetic number, because the mean of its divisors is an integer number (6303081).

Almost surely, 2^12606161 is an apocalyptic number.

It is an amenable number.

12606161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12606161 is an equidigital number, since it uses as much as digits as its factorization.

12606161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12606161 is about 3550.5155963606. The cubic root of 12606161 is about 232.7345980610.

Adding to 12606161 its reverse (16160621), we get a palindrome (28766782).

The spelling of 12606161 in words is "twelve million, six hundred six thousand, one hundred sixty-one".