11866866 has 16 divisors (see below), whose sum is σ = 25891488. Its totient is φ = 3596000.

The previous prime is 11866861. The next prime is 11866871. The reversal of 11866866 is 66866811.

11866866 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11866861) and next prime (11866871).

It is not an unprimeable number, because it can be changed into a prime (11866861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89835 + ... + 89966.

It is an arithmetic number, because the mean of its divisors is an integer number (1618218).

Almost surely, 2^11866866 is an apocalyptic number.

11866866 is an abundant number, since it is smaller than the sum of its proper divisors (14024622).

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

11866866 is a wasteful number, since it uses less digits than its factorization.

11866866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179817.

The product of its digits is 82944, while the sum is 42.

The square root of 11866866 is about 3444.8317810889. The cubic root of 11866866 is about 228.0930291344.

Subtracting 11866866 from its reverse (66866811), we obtain a palindrome (54999945).

The spelling of 11866866 in words is "eleven million, eight hundred sixty-six thousand, eight hundred sixty-six".