11965361 has 4 divisors (see below), whose sum is σ = 11981172. Its totient is φ = 11949552.

The previous prime is 11965339. The next prime is 11965379. The reversal of 11965361 is 16356911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7317025 + 4648336 = 2705^2 + 2156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11965361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11965321) 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 in 3 ways as a sum of consecutive naturals, for example, 6710 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (2995293).

Almost surely, 2^11965361 is an apocalyptic number.

It is an amenable number.

11965361 is a deficient number, since it is larger than the sum of its proper divisors (15811).

11965361 is an equidigital number, since it uses as much as digits as its factorization.

11965361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15810.

The product of its digits is 4860, while the sum is 32.

The square root of 11965361 is about 3459.0982929081. The cubic root of 11965361 is about 228.7223486737.

The spelling of 11965361 in words is "eleven million, nine hundred sixty-five thousand, three hundred sixty-one".