6648775 has 12 divisors (see below), whose sum is σ = 9422512. Its totient is φ = 4559040.

The previous prime is 6648773. The next prime is 6648791. The reversal of 6648775 is 5778466.

It is not a de Polignac number, because 6648775 - 2¹ = 6648773 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18822 + ... + 19171.

Almost surely, 2^6648775 is an apocalyptic number.

6648775 is a deficient number, since it is larger than the sum of its proper divisors (2773737).

6648775 is a wasteful number, since it uses less digits than its factorization.

6648775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38010 (or 38005 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 6648775 is about 2578.5218633938. The cubic root of 6648775 is about 188.0386879034.

It can be divided in two parts, 66 and 48775, that added together give a square (48841 = 221²).

The spelling of 6648775 in words is "six million, six hundred forty-eight thousand, seven hundred seventy-five".