6668975 has 6 divisors (see below), whose sum is σ = 8269560. Its totient is φ = 5335160.

The previous prime is 6668969. The next prime is 6669007. The reversal of 6668975 is 5798666.

It is not a de Polignac number, because 6668975 - 2⁶ = 6668911 is a prime.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 133355 + ... + 133404.

It is an arithmetic number, because the mean of its divisors is an integer number (1378260).

Almost surely, 2^6668975 is an apocalyptic number.

6668975 is a deficient number, since it is larger than the sum of its proper divisors (1600585).

6668975 is a wasteful number, since it uses less digits than its factorization.

6668975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266769 (or 266764 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 6668975 is about 2582.4358656122. The cubic root of 6668975 is about 188.2289255179.

The spelling of 6668975 in words is "six million, six hundred sixty-eight thousand, nine hundred seventy-five".