11861711 has 2 divisors, whose sum is σ = 11861712. Its totient is φ = 11861710.

The previous prime is 11861701. The next prime is 11861713. The reversal of 11861711 is 11716811.

It is a strong prime.

It is an emirp because it is prime and its reverse (11716811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11861711 - 2¹⁰ = 11860687 is a prime.

It is a Sophie Germain prime.

Together with 11861713, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11861713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5930855 + 5930856.

It is an arithmetic number, because the mean of its divisors is an integer number (5930856).

Almost surely, 2^11861711 is an apocalyptic number.

11861711 is a deficient number, since it is larger than the sum of its proper divisors (1).

11861711 is an equidigital number, since it uses as much as digits as its factorization.

11861711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 26.

The square root of 11861711 is about 3444.0834775017. The cubic root of 11861711 is about 228.0599962661.

The spelling of 11861711 in words is "eleven million, eight hundred sixty-one thousand, seven hundred eleven".