6647248 has 20 divisors (see below), whose sum is σ = 13194468. Its totient is φ = 3242240.

The previous prime is 6647243. The next prime is 6647269. The reversal of 6647248 is 8427466.

It can be written as a sum of positive squares in 2 ways, for example, as 2534464 + 4112784 = 1592^2 + 2028^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4411 + ... + 5722.

Almost surely, 2^6647248 is an apocalyptic number.

It is an amenable number.

6647248 is a deficient number, since it is larger than the sum of its proper divisors (6547220).

6647248 is a wasteful number, since it uses less digits than its factorization.

6647248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10182 (or 10176 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 6647248 is about 2578.2257465164. The cubic root of 6647248 is about 188.0242914138.

The spelling of 6647248 in words is "six million, six hundred forty-seven thousand, two hundred forty-eight".