6648975 has 36 divisors (see below), whose sum is σ = 12331800. Its totient is φ = 3420480.

The previous prime is 6648883. The next prime is 6648977. The reversal of 6648975 is 5798466.

It is not a de Polignac number, because 6648975 - 2¹⁰ = 6647951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6648975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648977) 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 35 ways as a sum of consecutive naturals, for example, 6016 + ... + 7034.

It is an arithmetic number, because the mean of its divisors is an integer number (342550).

Almost surely, 2^6648975 is an apocalyptic number.

6648975 is a deficient number, since it is larger than the sum of its proper divisors (5682825).

6648975 is a wasteful number, since it uses less digits than its factorization.

6648975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1056 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 6648975 is about 2578.5606450111. The cubic root of 6648975 is about 188.0405733314.

It can be divided in two parts, 66489 and 75, that added together give a square (66564 = 258²).

The spelling of 6648975 in words is "six million, six hundred forty-eight thousand, nine hundred seventy-five".