11965766 has 4 divisors (see below), whose sum is σ = 17948652. Its totient is φ = 5982882.

The previous prime is 11965753. The next prime is 11965769. The reversal of 11965766 is 66756911.

11965766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66756911 = 13 ⋅5135147.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2991440 + ... + 2991443.

It is an arithmetic number, because the mean of its divisors is an integer number (4487163).

Almost surely, 2^11965766 is an apocalyptic number.

11965766 is a deficient number, since it is larger than the sum of its proper divisors (5982886).

11965766 is an equidigital number, since it uses as much as digits as its factorization.

11965766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982885.

The product of its digits is 68040, while the sum is 41.

The square root of 11965766 is about 3459.1568336807. The cubic root of 11965766 is about 228.7249292201.

The spelling of 11965766 in words is "eleven million, nine hundred sixty-five thousand, seven hundred sixty-six".