11684021 has 8 divisors (see below), whose sum is σ = 11932800. Its totient is φ = 11437920.

The previous prime is 11684017. The next prime is 11684039. The reversal of 11684021 is 12048611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11684021 - 2² = 11684017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11684051) 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 7 ways as a sum of consecutive naturals, for example, 9785 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (1491600).

Almost surely, 2^11684021 is an apocalyptic number.

It is an amenable number.

11684021 is a deficient number, since it is larger than the sum of its proper divisors (248779).

11684021 is a wasteful number, since it uses less digits than its factorization.

11684021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 11684021 is about 3418.1897255711. The cubic root of 11684021 is about 226.9154724195.

The spelling of 11684021 in words is "eleven million, six hundred eighty-four thousand, twenty-one".