6648375 has 16 divisors (see below), whose sum is σ = 11063520. Its totient is φ = 3545600.

The previous prime is 6648371. The next prime is 6648401. The reversal of 6648375 is 5738466.

It is not a de Polignac number, because 6648375 - 2² = 6648371 is a prime.

6648375 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648371) 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 15 ways as a sum of consecutive naturals, for example, 8490 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (691470).

Almost surely, 2^6648375 is an apocalyptic number.

6648375 is a deficient number, since it is larger than the sum of its proper divisors (4415145).

6648375 is a wasteful number, since it uses less digits than its factorization.

6648375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17747 (or 17737 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 6648375 is about 2578.4442984094. Note that the first 3 decimals coincide. The cubic root of 6648375 is about 188.0349169339.

Subtracting from 6648375 its reverse (5738466), we obtain a palindrome (909909).

The spelling of 6648375 in words is "six million, six hundred forty-eight thousand, three hundred seventy-five".