3209065 has 4 divisors (see below), whose sum is σ = 3850884. Its totient is φ = 2567248.

The previous prime is 3209057. The next prime is 3209077. The reversal of 3209065 is 5609023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5609023 = 7 ⋅801289.

It can be written as a sum of positive squares in 2 ways, for example, as 737881 + 2471184 = 859^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 3209065 - 2³ = 3209057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 320902 + ... + 320911.

It is an arithmetic number, because the mean of its divisors is an integer number (962721).

Almost surely, 2^3209065 is an apocalyptic number.

It is an amenable number.

3209065 is a deficient number, since it is larger than the sum of its proper divisors (641819).

3209065 is an equidigital number, since it uses as much as digits as its factorization.

3209065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641818.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 3209065 is about 1791.3863346582. The cubic root of 3209065 is about 147.5002776975.

The spelling of 3209065 in words is "three million, two hundred nine thousand, sixty-five".