11666664 has 48 divisors (see below), whose sum is σ = 32622720. Its totient is φ = 3762720.

The previous prime is 11666663. The next prime is 11666689. The reversal of 11666664 is 46666611.

It is a super-2 number, since 2×11666664² = 272222097777792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11666663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (679640).

Almost surely, 2^11666664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11666664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16311360).

11666664 is an abundant number, since it is smaller than the sum of its proper divisors (20956056).

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

11666664 is a wasteful number, since it uses less digits than its factorization.

11666664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270 (or 5263 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 11666664 is about 3415.6498649598. The cubic root of 11666664 is about 226.8030532515.

It can be divided in two parts, 1166666 and 4, that multiplied together give a palindrome (4666664).

The spelling of 11666664 in words is "eleven million, six hundred sixty-six thousand, six hundred sixty-four".