3345665 has 4 divisors (see below), whose sum is σ = 4014804. Its totient is φ = 2676528.

The previous prime is 3345659. The next prime is 3345679. The reversal of 3345665 is 5665433.

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 2666689 + 678976 = 1633^2 + 824^2 .

It is a cyclic number.

It is not a de Polignac number, because 3345665 - 2⁸ = 3345409 is a prime.

It is a super-2 number, since 2×3345665² = 22386948584450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334562 + ... + 334571.

It is an arithmetic number, because the mean of its divisors is an integer number (1003701).

Almost surely, 2^3345665 is an apocalyptic number.

It is an amenable number.

3345665 is a deficient number, since it is larger than the sum of its proper divisors (669139).

3345665 is an equidigital number, since it uses as much as digits as its factorization.

3345665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669138.

The product of its digits is 32400, while the sum is 32.

The square root of 3345665 is about 1829.1159066609. The cubic root of 3345665 is about 149.5641421537.

The spelling of 3345665 in words is "three million, three hundred forty-five thousand, six hundred sixty-five".