6649244 has 48 divisors (see below), whose sum is σ = 14374080. Its totient is φ = 2626560.

The previous prime is 6649229. The next prime is 6649249. The reversal of 6649244 is 4429466.

It is a super-4 number, since 4×6649244⁴ (a number of 28 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28922 + ... + 29150.

It is an arithmetic number, because the mean of its divisors is an integer number (299460).

Almost surely, 2^6649244 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 6649244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7187040).

6649244 is an abundant number, since it is smaller than the sum of its proper divisors (7724836).

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

6649244 is a wasteful number, since it uses less digits than its factorization.

6649244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 316 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 6649244 is about 2578.6128053665. The cubic root of 6649244 is about 188.0431091725.

The spelling of 6649244 in words is "six million, six hundred forty-nine thousand, two hundred forty-four".