11805806 has 4 divisors (see below), whose sum is σ = 17708712. Its totient is φ = 5902902.

The previous prime is 11805799. The next prime is 11805811. The reversal of 11805806 is 60850811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60850811 = 7 ⋅8692973.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2951450 + ... + 2951453.

It is an arithmetic number, because the mean of its divisors is an integer number (4427178).

Almost surely, 2^11805806 is an apocalyptic number.

11805806 is a deficient number, since it is larger than the sum of its proper divisors (5902906).

11805806 is an equidigital number, since it uses as much as digits as its factorization.

11805806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5902905.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 11805806 is about 3435.9577995080. The cubic root of 11805806 is about 227.7011448114.

The spelling of 11805806 in words is "eleven million, eight hundred five thousand, eight hundred six".