11566717 has 2 divisors, whose sum is σ = 11566718. Its totient is φ = 11566716.

The previous prime is 11566693. The next prime is 11566727. The reversal of 11566717 is 71766511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9114361 + 2452356 = 3019^2 + 1566^2 .

It is an emirp because it is prime and its reverse (71766511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11566717 - 2¹⁹ = 11042429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11566727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5783358 + 5783359.

It is an arithmetic number, because the mean of its divisors is an integer number (5783359).

Almost surely, 2^11566717 is an apocalyptic number.

It is an amenable number.

11566717 is a deficient number, since it is larger than the sum of its proper divisors (1).

11566717 is an equidigital number, since it uses as much as digits as its factorization.

11566717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 34.

The square root of 11566717 is about 3400.9876506686. The cubic root of 11566717 is about 226.1535294792.

The spelling of 11566717 in words is "eleven million, five hundred sixty-six thousand, seven hundred seventeen".