6644672 has 28 divisors (see below), whose sum is σ = 13472160. Its totient is φ = 3251648.

The previous prime is 6644647. The next prime is 6644681. The reversal of 6644672 is 2764466.

It is a happy number.

The cubic root of 6644672 is 188.

It is a perfect power (a cube), and thus also a powerful number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141353 + ... + 141399.

Almost surely, 2^6644672 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 6644672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6736080).

6644672 is an abundant number, since it is smaller than the sum of its proper divisors (6827488).

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

6644672 is an frugal number, since it uses more digits than its factorization.

6644672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 49 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 6644672 is about 2577.7261297508.

The spelling of 6644672 in words is "six million, six hundred forty-four thousand, six hundred seventy-two".