6604003 has 4 divisors (see below), whose sum is σ = 7547440. Its totient is φ = 5660568.

The previous prime is 6603997. The next prime is 6604009. The reversal of 6604003 is 3004066.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (6603997) and next prime (6604009).

It is a cyclic number.

It is not a de Polignac number, because 6604003 - 2⁹ = 6603491 is a prime.

It is a super-2 number, since 2×6604003² = 87225711248018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6604009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471708 + ... + 471721.

It is an arithmetic number, because the mean of its divisors is an integer number (1886860).

Almost surely, 2^6604003 is an apocalyptic number.

6604003 is a deficient number, since it is larger than the sum of its proper divisors (943437).

6604003 is an equidigital number, since it uses as much as digits as its factorization.

6604003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943436.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 6604003 is about 2569.8254804558. The cubic root of 6604003 is about 187.6156607873.

Adding to 6604003 its reverse (3004066), we get a palindrome (9608069).

The spelling of 6604003 in words is "six million, six hundred four thousand, three".