11566806 has 16 divisors (see below), whose sum is σ = 23277504. Its totient is φ = 3831624.

The previous prime is 11566781. The next prime is 11566811. The reversal of 11566806 is 60866511.

11566806 = 1699² + 1700² + ... + 1702².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4936 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (1454844).

Almost surely, 2^11566806 is an apocalyptic number.

11566806 is an abundant number, since it is smaller than the sum of its proper divisors (11710698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11566806 is a wasteful number, since it uses less digits than its factorization.

11566806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 11566806 is about 3401.0007350778. Note that the first 3 decimals coincide. The cubic root of 11566806 is about 226.1541095231.

The spelling of 11566806 in words is "eleven million, five hundred sixty-six thousand, eight hundred six".