136585285 has 4 divisors (see below), whose sum is σ = 163902348. Its totient is φ = 109268224.

The previous prime is 136585279. The next prime is 136585297. The reversal of 136585285 is 582585631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74080449 + 62504836 = 8607^2 + 7906^2 .

It is a cyclic number.

It is not a de Polignac number, because 136585285 - 2³ = 136585277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13658524 + ... + 13658533.

It is an arithmetic number, because the mean of its divisors is an integer number (40975587).

Almost surely, 2^136585285 is an apocalyptic number.

It is an amenable number.

136585285 is a deficient number, since it is larger than the sum of its proper divisors (27317063).

136585285 is an equidigital number, since it uses as much as digits as its factorization.

136585285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27317062.

The product of its digits is 288000, while the sum is 43.

The square root of 136585285 is about 11686.9707366794. The cubic root of 136585285 is about 514.9929744226.

The spelling of 136585285 in words is "one hundred thirty-six million, five hundred eighty-five thousand, two hundred eighty-five".