11982681 has 16 divisors (see below), whose sum is σ = 18166720. Its totient is φ = 7801920.

The previous prime is 11982679. The next prime is 11982689. The reversal of 11982681 is 18628911.

It is not a de Polignac number, because 11982681 - 2¹ = 11982679 is a prime.

It is a super-2 number, since 2×11982681² = 287169287895522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11982689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4000 + ... + 6321.

It is an arithmetic number, because the mean of its divisors is an integer number (1135420).

Almost surely, 2^11982681 is an apocalyptic number.

It is an amenable number.

11982681 is a deficient number, since it is larger than the sum of its proper divisors (6184039).

11982681 is a wasteful number, since it uses less digits than its factorization.

11982681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10373 (or 10367 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 11982681 is about 3461.6009302056. The cubic root of 11982681 is about 228.8326548926.

The spelling of 11982681 in words is "eleven million, nine hundred eighty-two thousand, six hundred eighty-one".