11323661 has 2 divisors, whose sum is σ = 11323662. Its totient is φ = 11323660.

The previous prime is 11323643. The next prime is 11323681. The reversal of 11323661 is 16632311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8702500 + 2621161 = 2950^2 + 1619^2 .

It is an emirp because it is prime and its reverse (16632311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11323661 - 2¹⁴ = 11307277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11323621) 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, 5661830 + 5661831.

It is an arithmetic number, because the mean of its divisors is an integer number (5661831).

Almost surely, 2^11323661 is an apocalyptic number.

It is an amenable number.

11323661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11323661 is an equidigital number, since it uses as much as digits as its factorization.

11323661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 11323661 is about 3365.0647839232. The cubic root of 11323661 is about 224.5582179129.

Adding to 11323661 its reverse (16632311), we get a palindrome (27955972).

The spelling of 11323661 in words is "eleven million, three hundred twenty-three thousand, six hundred sixty-one".