11805641 has 2 divisors, whose sum is σ = 11805642. Its totient is φ = 11805640.

The previous prime is 11805533. The next prime is 11805709. The reversal of 11805641 is 14650811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11703241 + 102400 = 3421^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 11805641 - 2¹⁴ = 11789257 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11805641.

It is not a weakly prime, because it can be changed into another prime (11804641) 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, 5902820 + 5902821.

It is an arithmetic number, because the mean of its divisors is an integer number (5902821).

Almost surely, 2^11805641 is an apocalyptic number.

It is an amenable number.

11805641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11805641 is an equidigital number, since it uses as much as digits as its factorization.

11805641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 11805641 is about 3435.9337886519. The cubic root of 11805641 is about 227.7000840095.

The spelling of 11805641 in words is "eleven million, eight hundred five thousand, six hundred forty-one".