6728164 has 12 divisors (see below), whose sum is σ = 11794300. Its totient is φ = 3358368.

The previous prime is 6728149. The next prime is 6728171. The reversal of 6728164 is 4618276.

It can be written as a sum of positive squares in 2 ways, for example, as 5712100 + 1016064 = 2390^2 + 1008^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302 + ... + 4330.

Almost surely, 2^6728164 is an apocalyptic number.

It is an amenable number.

6728164 is a deficient number, since it is larger than the sum of its proper divisors (5066136).

6728164 is a wasteful number, since it uses less digits than its factorization.

6728164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862 (or 2860 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 6728164 is about 2593.8704670820. The cubic root of 6728164 is about 188.7841474409.

It can be divided in two parts, 672 and 8164, that added together give a square (8836 = 94²).

The spelling of 6728164 in words is "six million, seven hundred twenty-eight thousand, one hundred sixty-four".