6649344 has 160 divisors (see below), whose sum is σ = 21769440. Its totient is φ = 1990656.

The previous prime is 6649337. The next prime is 6649367. The reversal of 6649344 is 4439466.

6649344 is a `hidden beast` number, since 6 + 649 + 3 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 6⁴ + 6⁸ + 4 + 9⁶ + 3¹¹ + 4⁸ + 4¹¹ .

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 6649299 and 6649308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179694 + ... + 179730.

It is an arithmetic number, because the mean of its divisors is an integer number (136059).

Almost surely, 2^6649344 is an apocalyptic number.

6649344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6649344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10884720).

6649344 is an abundant number, since it is smaller than the sum of its proper divisors (15120096).

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

6649344 is a wasteful number, since it uses less digits than its factorization.

6649344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 55 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6649344 is about 2578.6321955642. The cubic root of 6649344 is about 188.0440518469.

The spelling of 6649344 in words is "six million, six hundred forty-nine thousand, three hundred forty-four".