6604581 has 16 divisors (see below), whose sum is σ = 9289728. Its totient is φ = 4167600.

The previous prime is 6604579. The next prime is 6604583. The reversal of 6604581 is 1854066.

It is an interprime number because it is at equal distance from previous prime (6604579) and next prime (6604583).

It is not a de Polignac number, because 6604581 - 2¹ = 6604579 is a prime.

It is a super-2 number, since 2×6604581² = 87240980371122, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6604583) 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 15 ways as a sum of consecutive naturals, for example, 3616 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

Almost surely, 2^6604581 is an apocalyptic number.

It is an amenable number.

6604581 is a deficient number, since it is larger than the sum of its proper divisors (2685147).

6604581 is a wasteful number, since it uses less digits than its factorization.

6604581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 6604581 is about 2569.9379369938. The cubic root of 6604581 is about 187.6211341690.

The spelling of 6604581 in words is "six million, six hundred four thousand, five hundred eighty-one".