6728879 has 8 divisors (see below), whose sum is σ = 6927648. Its totient is φ = 6531840.

The previous prime is 6728873. The next prime is 6728881. The reversal of 6728879 is 9788276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6728879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728873) 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, 13574 + ... + 14060.

It is an arithmetic number, because the mean of its divisors is an integer number (865956).

Almost surely, 2^6728879 is an apocalyptic number.

6728879 is a deficient number, since it is larger than the sum of its proper divisors (198769).

6728879 is a wasteful number, since it uses less digits than its factorization.

6728879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its digits is 338688, while the sum is 47.

The square root of 6728879 is about 2594.0082883445. The cubic root of 6728879 is about 188.7908345492.

The spelling of 6728879 in words is "six million, seven hundred twenty-eight thousand, eight hundred seventy-nine".