6645164 has 24 divisors (see below), whose sum is σ = 12479040. Its totient is φ = 3085056.

The previous prime is 6645161. The next prime is 6645169. The reversal of 6645164 is 4615466.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6645164.

It is not an unprimeable number, because it can be changed into a prime (6645161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754 + ... + 5990.

It is an arithmetic number, because the mean of its divisors is an integer number (519960).

Almost surely, 2^6645164 is an apocalyptic number.

It is an amenable number.

6645164 is a deficient number, since it is larger than the sum of its proper divisors (5833876).

6645164 is a wasteful number, since it uses less digits than its factorization.

6645164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1335 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 6645164 is about 2577.8215609309. The cubic root of 6645164 is about 188.0046399941.

The spelling of 6645164 in words is "six million, six hundred forty-five thousand, one hundred sixty-four".