6642875 has 16 divisors (see below), whose sum is σ = 8729760. Its totient is φ = 5032800.

The previous prime is 6642863. The next prime is 6642877. The reversal of 6642875 is 5782466.

It is a happy number.

It is not a de Polignac number, because 6642875 - 2⁸ = 6642619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6642877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 977 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (545610).

Almost surely, 2^6642875 is an apocalyptic number.

6642875 is a deficient number, since it is larger than the sum of its proper divisors (2086885).

6642875 is a wasteful number, since it uses less digits than its factorization.

6642875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831 (or 2821 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 6642875 is about 2577.3775431628. The cubic root of 6642875 is about 187.9830507581.

The spelling of 6642875 in words is "six million, six hundred forty-two thousand, eight hundred seventy-five".