3285581 has 4 divisors (see below), whose sum is σ = 3538332. Its totient is φ = 3032832.

The previous prime is 3285577. The next prime is 3285593. The reversal of 3285581 is 1855823.

It is a happy number.

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 292681 + 2992900 = 541^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 3285581 - 2² = 3285577 is a prime.

It is a super-3 number, since 3×3285581³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3285571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126356 + ... + 126381.

It is an arithmetic number, because the mean of its divisors is an integer number (884583).

Almost surely, 2^3285581 is an apocalyptic number.

It is an amenable number.

3285581 is a deficient number, since it is larger than the sum of its proper divisors (252751).

3285581 is a wasteful number, since it uses less digits than its factorization.

3285581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252750.

The product of its digits is 9600, while the sum is 32.

The square root of 3285581 is about 1812.6171686266. The cubic root of 3285581 is about 148.6633994425.

The spelling of 3285581 in words is "three million, two hundred eighty-five thousand, five hundred eighty-one".