11782666 has 32 divisors (see below), whose sum is σ = 22090752. Its totient is φ = 4596480.

The previous prime is 11782657. The next prime is 11782669. The reversal of 11782666 is 66628711.

It is a super-3 number, since 3×11782666³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11782669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6580 + ... + 8176.

It is an arithmetic number, because the mean of its divisors is an integer number (690336).

Almost surely, 2^11782666 is an apocalyptic number.

11782666 is a deficient number, since it is larger than the sum of its proper divisors (10308086).

11782666 is a wasteful number, since it uses less digits than its factorization.

11782666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its digits is 24192, while the sum is 37.

The square root of 11782666 is about 3432.5888189528. The cubic root of 11782666 is about 227.5522787717.

It can be divided in two parts, 1178 and 2666, that added together give a square (3844 = 62²).

The spelling of 11782666 in words is "eleven million, seven hundred eighty-two thousand, six hundred sixty-six".