6644675 has 6 divisors (see below), whose sum is σ = 8239428. Its totient is φ = 5315720.

The previous prime is 6644647. The next prime is 6644681. The reversal of 6644675 is 5764466.

It is a de Polignac number, because none of the positive numbers 2^k-6644675 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132869 + ... + 132918.

It is an arithmetic number, because the mean of its divisors is an integer number (1373238).

Almost surely, 2^6644675 is an apocalyptic number.

6644675 is a deficient number, since it is larger than the sum of its proper divisors (1594753).

6644675 is a wasteful number, since it uses less digits than its factorization.

6644675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265797 (or 265792 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 6644675 is about 2577.7267116589. The cubic root of 6644675 is about 188.0000282933. Note that the first 4 decimals are identical.

The spelling of 6644675 in words is "six million, six hundred forty-four thousand, six hundred seventy-five".