3640303 has 4 divisors (see below), whose sum is σ = 3644680. Its totient is φ = 3635928.

The previous prime is 3640289. The next prime is 3640309. The reversal of 3640303 is 3030463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640309) 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, 513 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (911170).

Almost surely, 2^3640303 is an apocalyptic number.

3640303 is a deficient number, since it is larger than the sum of its proper divisors (4377).

3640303 is a wasteful number, since it uses less digits than its factorization.

3640303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 3640303 is about 1907.9578087578. The cubic root of 3640303 is about 153.8317017899.

Adding to 3640303 its product of nonzero digits (648), we get a triangular number (3640951 = T₂₆₉₈).

Adding to 3640303 its reverse (3030463), we get a palindrome (6670766).

The spelling of 3640303 in words is "three million, six hundred forty thousand, three hundred three".