11285566 has 4 divisors (see below), whose sum is σ = 16928352. Its totient is φ = 5642782.

The previous prime is 11285557. The next prime is 11285567. The reversal of 11285566 is 66558211.

It is a happy number.

11285566 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11285567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821390 + ... + 2821393.

It is an arithmetic number, because the mean of its divisors is an integer number (4232088).

Almost surely, 2^11285566 is an apocalyptic number.

11285566 is a deficient number, since it is larger than the sum of its proper divisors (5642786).

11285566 is an equidigital number, since it uses as much as digits as its factorization.

11285566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642785.

The product of its digits is 14400, while the sum is 34.

The square root of 11285566 is about 3359.3996487468. The cubic root of 11285566 is about 224.3061158076.

The spelling of 11285566 in words is "eleven million, two hundred eighty-five thousand, five hundred sixty-six".