6648736 has 24 divisors (see below), whose sum is σ = 13176324. Its totient is φ = 3302400.

The previous prime is 6648721. The next prime is 6648737. The reversal of 6648736 is 6378466.

It can be written as a sum of positive squares in 2 ways, for example, as 6533136 + 115600 = 2556^2 + 340^2 .

It is not an unprimeable number, because it can be changed into a prime (6648737) 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 3 ways as a sum of consecutive naturals, for example, 4936 + ... + 6136.

Almost surely, 2^6648736 is an apocalyptic number.

It is an amenable number.

6648736 is a deficient number, since it is larger than the sum of its proper divisors (6527588).

6648736 is a wasteful number, since it uses less digits than its factorization.

6648736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 1376 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 6648736 is about 2578.5143009105. The cubic root of 6648736 is about 188.0383202405.

The spelling of 6648736 in words is "six million, six hundred forty-eight thousand, seven hundred thirty-six".