6604401 has 8 divisors (see below), whose sum is σ = 8955360. Its totient is φ = 4328192.

The previous prime is 6604399. The next prime is 6604421. The reversal of 6604401 is 1044066.

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 6604401 - 2¹ = 6604399 is a prime.

It is a super-2 number, since 2×6604401² = 87236225137602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6604421) 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 7 ways as a sum of consecutive naturals, for example, 18480 + ... + 18833.

It is an arithmetic number, because the mean of its divisors is an integer number (1119420).

Almost surely, 2^6604401 is an apocalyptic number.

It is an amenable number.

6604401 is a deficient number, since it is larger than the sum of its proper divisors (2350959).

6604401 is a wasteful number, since it uses less digits than its factorization.

6604401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37375.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6604401 is about 2569.9029164542. The cubic root of 6604401 is about 187.6194296899.

Adding to 6604401 its reverse (1044066), we get a palindrome (7648467).

The spelling of 6604401 in words is "six million, six hundred four thousand, four hundred one".