12195761 has 2 divisors, whose sum is σ = 12195762. Its totient is φ = 12195760.

The previous prime is 12195731. The next prime is 12195767. The reversal of 12195761 is 16759121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 78400 = 3481^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 12195761 - 2⁶ = 12195697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12195767) 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, 6097880 + 6097881.

It is an arithmetic number, because the mean of its divisors is an integer number (6097881).

Almost surely, 2^12195761 is an apocalyptic number.

It is an amenable number.

12195761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12195761 is an equidigital number, since it uses as much as digits as its factorization.

12195761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 32.

The square root of 12195761 is about 3492.2429755102. The cubic root of 12195761 is about 230.1810861213.

The spelling of 12195761 in words is "twelve million, one hundred ninety-five thousand, seven hundred sixty-one".