11885585 has 4 divisors (see below), whose sum is σ = 14262708. Its totient is φ = 9508464.

The previous prime is 11885569. The next prime is 11885597. The reversal of 11885585 is 58558811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58558811 = 127 ⋅461093.

It can be written as a sum of positive squares in 2 ways, for example, as 6558721 + 5326864 = 2561^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 11885585 - 2⁴ = 11885569 is a prime.

It is a Duffinian number.

It is a Curzon 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 in 3 ways as a sum of consecutive naturals, for example, 1188554 + ... + 1188563.

It is an arithmetic number, because the mean of its divisors is an integer number (3565677).

Almost surely, 2^11885585 is an apocalyptic number.

It is an amenable number.

11885585 is a deficient number, since it is larger than the sum of its proper divisors (2377123).

11885585 is an equidigital number, since it uses as much as digits as its factorization.

11885585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377122.

The product of its digits is 64000, while the sum is 41.

The square root of 11885585 is about 3447.5476791482. The cubic root of 11885585 is about 228.2128987602.

The spelling of 11885585 in words is "eleven million, eight hundred eighty-five thousand, five hundred eighty-five".