3665003 has 4 divisors (see below), whose sum is σ = 3734208. Its totient is φ = 3595800.

The previous prime is 3664963. The next prime is 3665017. The reversal of 3665003 is 3005663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3005663 = 23 ⋅130681.

It is a cyclic number.

It is not a de Polignac number, because 3665003 - 2⁸ = 3664747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3665003.

It is not an unprimeable number, because it can be changed into a prime (3665023) 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, 34523 + ... + 34628.

It is an arithmetic number, because the mean of its divisors is an integer number (933552).

Almost surely, 2^3665003 is an apocalyptic number.

3665003 is a deficient number, since it is larger than the sum of its proper divisors (69205).

3665003 is an equidigital number, since it uses as much as digits as its factorization.

3665003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69204.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 3665003 is about 1914.4197554351. The cubic root of 3665003 is about 154.1788415351.

The spelling of 3665003 in words is "three million, six hundred sixty-five thousand, three".