11709611 has 2 divisors, whose sum is σ = 11709612. Its totient is φ = 11709610.

The previous prime is 11709571. The next prime is 11709613. The reversal of 11709611 is 11690711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11709611 - 2⁶ = 11709547 is a prime.

It is a super-2 number, since 2×11709611² = 274229979542642, which contains 22 as substring.

Together with 11709613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11709613) 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, 5854805 + 5854806.

It is an arithmetic number, because the mean of its divisors is an integer number (5854806).

Almost surely, 2^11709611 is an apocalyptic number.

11709611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11709611 is an equidigital number, since it uses as much as digits as its factorization.

11709611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 11709611 is about 3421.9308876715. The cubic root of 11709611 is about 227.0810128278.

The spelling of 11709611 in words is "eleven million, seven hundred nine thousand, six hundred eleven".