11682809 has 2 divisors, whose sum is σ = 11682810. Its totient is φ = 11682808.

The previous prime is 11682751. The next prime is 11682817. The reversal of 11682809 is 90828611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11580409 + 102400 = 3403^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 11682809 - 2²⁰ = 10634233 is a prime.

It is a super-2 number, since 2×11682809² = 272976052260962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11682889) 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 as a sum of consecutive naturals, namely, 5841404 + 5841405.

It is an arithmetic number, because the mean of its divisors is an integer number (5841405).

Almost surely, 2^11682809 is an apocalyptic number.

It is an amenable number.

11682809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11682809 is an equidigital number, since it uses as much as digits as its factorization.

11682809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 11682809 is about 3418.0124341494. The cubic root of 11682809 is about 226.9076260607.

The spelling of 11682809 in words is "eleven million, six hundred eighty-two thousand, eight hundred nine".