6603648 has 64 divisors (see below), whose sum is σ = 18176400. Its totient is φ = 2121728.

The previous prime is 6603647. The next prime is 6603671. The reversal of 6603648 is 8463066.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6603647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10840 + ... + 11432.

Almost surely, 2^6603648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6603648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9088200).

6603648 is an abundant number, since it is smaller than the sum of its proper divisors (11572752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6603648 is a wasteful number, since it uses less digits than its factorization.

6603648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 6603648 is about 2569.7564086894. The cubic root of 6603648 is about 187.6122989498.

The spelling of 6603648 in words is "six million, six hundred three thousand, six hundred forty-eight".