11995717 has 2 divisors, whose sum is σ = 11995718. Its totient is φ = 11995716.

The previous prime is 11995691. The next prime is 11995721. The reversal of 11995717 is 71759911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11840481 + 155236 = 3441^2 + 394^2 .

It is an emirp because it is prime and its reverse (71759911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11995717 - 2¹¹ = 11993669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11995717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11995757) 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, 5997858 + 5997859.

It is an arithmetic number, because the mean of its divisors is an integer number (5997859).

Almost surely, 2^11995717 is an apocalyptic number.

It is an amenable number.

11995717 is a deficient number, since it is larger than the sum of its proper divisors (1).

11995717 is an equidigital number, since it uses as much as digits as its factorization.

11995717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19845, while the sum is 40.

The square root of 11995717 is about 3463.4833621659. The cubic root of 11995717 is about 228.9156074300.

The spelling of 11995717 in words is "eleven million, nine hundred ninety-five thousand, seven hundred seventeen".