6690164 has 12 divisors (see below), whose sum is σ = 12608484. Its totient is φ = 3087744.

The previous prime is 6690149. The next prime is 6690169. The reversal of 6690164 is 4610966.

6690164 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 5107600 = 1258^2 + 2260^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6690164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64277 + ... + 64380.

It is an arithmetic number, because the mean of its divisors is an integer number (1050707).

Almost surely, 2^6690164 is an apocalyptic number.

It is an amenable number.

6690164 is a deficient number, since it is larger than the sum of its proper divisors (5918320).

6690164 is a wasteful number, since it uses less digits than its factorization.

6690164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128674 (or 128672 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6690164 is about 2586.5351341128. The cubic root of 6690164 is about 188.4280648716.

The spelling of 6690164 in words is "six million, six hundred ninety thousand, one hundred sixty-four".