11766566 has 12 divisors (see below), whose sum is σ = 20531628. Its totient is φ = 5042772.

The previous prime is 11766541. The next prime is 11766569. The reversal of 11766566 is 66566711.

11766566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11766569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59936 + ... + 60131.

It is an arithmetic number, because the mean of its divisors is an integer number (1710969).

Almost surely, 2^11766566 is an apocalyptic number.

11766566 is a deficient number, since it is larger than the sum of its proper divisors (8765062).

11766566 is a wasteful number, since it uses less digits than its factorization.

11766566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120083 (or 120076 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 11766566 is about 3430.2428485459. The cubic root of 11766566 is about 227.4485879880.

The spelling of 11766566 in words is "eleven million, seven hundred sixty-six thousand, five hundred sixty-six".