11666056 has 8 divisors (see below), whose sum is σ = 21873870. Its totient is φ = 5833024.

The previous prime is 11666051. The next prime is 11666059. The reversal of 11666056 is 65066611.

It can be written as a sum of positive squares in only one way, i.e., 11222500 + 443556 = 3350^2 + 666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11666051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 729121 + ... + 729136.

Almost surely, 2^11666056 is an apocalyptic number.

It is an amenable number.

11666056 is a deficient number, since it is larger than the sum of its proper divisors (10207814).

11666056 is a wasteful number, since it uses less digits than its factorization.

11666056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458263 (or 1458259 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 11666056 is about 3415.5608617034. The cubic root of 11666056 is about 226.7991132892.

It can be divided in two parts, 1166605 and 6, that added together give a palindrome (1166611).

The spelling of 11666056 in words is "eleven million, six hundred sixty-six thousand, fifty-six".