6728884 has 12 divisors (see below), whose sum is σ = 11820004. Its totient is φ = 3351744.

The previous prime is 6728881. The next prime is 6728947. The reversal of 6728884 is 4888276.

It can be written as a sum of positive squares in 2 ways, for example, as 3763600 + 2965284 = 1940^2 + 1722^2 .

It is a super-3 number, since 3×6728884³ (a number of 21 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6728884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1929 + ... + 4144.

Almost surely, 2^6728884 is an apocalyptic number.

It is an amenable number.

6728884 is a deficient number, since it is larger than the sum of its proper divisors (5091120).

6728884 is a wasteful number, since it uses less digits than its factorization.

6728884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354 (or 6352 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 6728884 is about 2594.0092521038. The cubic root of 6728884 is about 188.7908813105.

The spelling of 6728884 in words is "six million, seven hundred twenty-eight thousand, eight hundred eighty-four".