2185885 has 8 divisors (see below), whose sum is σ = 2824920. Its totient is φ = 1614144.

The previous prime is 2185873. The next prime is 2185889. The reversal of 2185885 is 5885812.

2185885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4356 + 2181529 = 66^2 + 1477^2 .

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 2185885 - 2⁵ = 2185853 is a prime.

It is a super-3 number, since 3×2185885³ = 31333086981324087375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185889) 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, 16750 + ... + 16879.

It is an arithmetic number, because the mean of its divisors is an integer number (353115).

2^2185885 is an apocalyptic number.

It is an amenable number.

2185885 is a deficient number, since it is larger than the sum of its proper divisors (639035).

2185885 is a wasteful number, since it uses less digits than its factorization.

2185885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33647.

The product of its digits is 25600, while the sum is 37.

The square root of 2185885 is about 1478.4738753187. The cubic root of 2185885 is about 129.7803984794.

The spelling of 2185885 in words is "two million, one hundred eighty-five thousand, eight hundred eighty-five".