11684813 has 4 divisors (see below), whose sum is σ = 13354080. Its totient is φ = 10015548.

The previous prime is 11684749. The next prime is 11684819. The reversal of 11684813 is 31848611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31848611 = 761 ⋅41851.

It is a cyclic number.

It is not a de Polignac number, because 11684813 - 2⁶ = 11684749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11684813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11684819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834623 + ... + 834636.

It is an arithmetic number, because the mean of its divisors is an integer number (3338520).

Almost surely, 2^11684813 is an apocalyptic number.

It is an amenable number.

11684813 is a deficient number, since it is larger than the sum of its proper divisors (1669267).

11684813 is an equidigital number, since it uses as much as digits as its factorization.

11684813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669266.

The product of its digits is 4608, while the sum is 32.

The square root of 11684813 is about 3418.3055744038. The cubic root of 11684813 is about 226.9205994500.

The spelling of 11684813 in words is "eleven million, six hundred eighty-four thousand, eight hundred thirteen".