3665217 has 8 divisors (see below), whose sum is σ = 5174496. Its totient is φ = 2299712.

The previous prime is 3665203. The next prime is 3665227. The reversal of 3665217 is 7125663.

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 3665217 - 2⁶ = 3665153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665227) 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 in 7 ways as a sum of consecutive naturals, for example, 35883 + ... + 35984.

It is an arithmetic number, because the mean of its divisors is an integer number (646812).

Almost surely, 2^3665217 is an apocalyptic number.

It is an amenable number.

3665217 is a deficient number, since it is larger than the sum of its proper divisors (1509279).

3665217 is a wasteful number, since it uses less digits than its factorization.

3665217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71887.

The product of its digits is 7560, while the sum is 30.

The square root of 3665217 is about 1914.4756462280. The cubic root of 3665217 is about 154.1818423175.

The spelling of 3665217 in words is "three million, six hundred sixty-five thousand, two hundred seventeen".