11666940 has 48 divisors (see below), whose sum is σ = 32821152. Its totient is φ = 3096576.

The previous prime is 11666939. The next prime is 11666953. The reversal of 11666940 is 4966611.

11666940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11666940² = 272234977927200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19932 + ... + 20508.

It is an arithmetic number, because the mean of its divisors is an integer number (683774).

Almost surely, 2^11666940 is an apocalyptic number.

11666940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11666940 is an abundant number, since it is smaller than the sum of its proper divisors (21154212).

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

11666940 is a wasteful number, since it uses less digits than its factorization.

11666940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 11666940 is about 3415.6902669885. The cubic root of 11666940 is about 226.8048417419.

The spelling of 11666940 in words is "eleven million, six hundred sixty-six thousand, nine hundred forty".