3603603 has 4 divisors (see below), whose sum is σ = 4804808. Its totient is φ = 2402400.

The previous prime is 3603583. The next prime is 3603619. The reversal of 3603603 is 3063063.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3603603 - 2⁶ = 3603539 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

3603603 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3603603.

It is not an unprimeable number, because it can be changed into a prime (3603623) 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, 600598 + ... + 600603.

It is an arithmetic number, because the mean of its divisors is an integer number (1201202).

Almost surely, 2^3603603 is an apocalyptic number.

3603603 is a deficient number, since it is larger than the sum of its proper divisors (1201205).

3603603 is a wasteful number, since it uses less digits than its factorization.

3603603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201204.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 3603603 is about 1898.3158325210. The cubic root of 3603603 is about 153.3129992989.

Adding to 3603603 its reverse (3063063), we get a palindrome (6666666).

The spelling of 3603603 in words is "three million, six hundred three thousand, six hundred three".