12066786 has 48 divisors (see below), whose sum is σ = 28346400. Its totient is φ = 3804408.

The previous prime is 12066749. The next prime is 12066797. The reversal of 12066786 is 68766021.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12066786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19185 + ... + 19803.

It is an arithmetic number, because the mean of its divisors is an integer number (590550).

Almost surely, 2^12066786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12066786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14173200).

12066786 is an abundant number, since it is smaller than the sum of its proper divisors (16279614).

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

12066786 is a wasteful number, since it uses less digits than its factorization.

12066786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 12066786 is about 3473.7279686239. The cubic root of 12066786 is about 229.3667901394.

The spelling of 12066786 in words is "twelve million, sixty-six thousand, seven hundred eighty-six".