11866216 has 8 divisors (see below), whose sum is σ = 22249170. Its totient is φ = 5933104.

The previous prime is 11866213. The next prime is 11866247. The reversal of 11866216 is 61266811.

It can be written as a sum of positive squares in only one way, i.e., 10956100 + 910116 = 3310^2 + 954^2 .

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 (11866213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 741631 + ... + 741646.

Almost surely, 2^11866216 is an apocalyptic number.

It is an amenable number.

11866216 is a deficient number, since it is larger than the sum of its proper divisors (10382954).

11866216 is a wasteful number, since it uses less digits than its factorization.

11866216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483283 (or 1483279 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 11866216 is about 3444.7374355675. The cubic root of 11866216 is about 228.0888645084.

The spelling of 11866216 in words is "eleven million, eight hundred sixty-six thousand, two hundred sixteen".