11556666 has 24 divisors (see below), whose sum is σ = 27316224. Its totient is φ = 3501960.

The previous prime is 11556653. The next prime is 11556683. The reversal of 11556666 is 66665511.

11556666 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 a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11556666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28986 + ... + 29381.

It is an arithmetic number, because the mean of its divisors is an integer number (1138176).

Almost surely, 2^11556666 is an apocalyptic number.

11556666 is an abundant number, since it is smaller than the sum of its proper divisors (15759558).

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

11556666 is a wasteful number, since it uses less digits than its factorization.

11556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58386 (or 58383 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 11556666 is about 3399.5096705260. The cubic root of 11556666 is about 226.0880044662.

The spelling of 11556666 in words is "eleven million, five hundred fifty-six thousand, six hundred sixty-six".