3665345 has 8 divisors (see below), whose sum is σ = 4411176. Its totient is φ = 2923776.

The previous prime is 3665329. The next prime is 3665357. The reversal of 3665345 is 5435663.

It can be written as a sum of positive squares in 4 ways, for example, as 5776 + 3659569 = 76^2 + 1913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3665345 - 2⁴ = 3665329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (551397).

Almost surely, 2^3665345 is an apocalyptic number.

It is an amenable number.

3665345 is a deficient number, since it is larger than the sum of its proper divisors (745831).

3665345 is a wasteful number, since it uses less digits than its factorization.

3665345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131.

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

The square root of 3665345 is about 1914.5090754551. The cubic root of 3665345 is about 154.1836371222.

The spelling of 3665345 in words is "three million, six hundred sixty-five thousand, three hundred forty-five".