3585581 has 2 divisors, whose sum is σ = 3585582. Its totient is φ = 3585580.

The previous prime is 3585557. The next prime is 3585611. The reversal of 3585581 is 1855853.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 1136356 = 1565^2 + 1066^2 .

It is an emirp because it is prime and its reverse (1855853) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3585581 is a prime.

It is a super-2 number, since 2×3585581² = 25712782215122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3585481) 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, 1792790 + 1792791.

It is an arithmetic number, because the mean of its divisors is an integer number (1792791).

Almost surely, 2^3585581 is an apocalyptic number.

It is an amenable number.

3585581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3585581 is an equidigital number, since it uses as much as digits as its factorization.

3585581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 35.

The square root of 3585581 is about 1893.5630435768. The cubic root of 3585581 is about 153.0569938748.

The spelling of 3585581 in words is "three million, five hundred eighty-five thousand, five hundred eighty-one".