6728895 has 12 divisors (see below), whose sum is σ = 11663496. Its totient is φ = 3588720.

The previous prime is 6728881. The next prime is 6728947. The reversal of 6728895 is 5988276.

It is not a de Polignac number, because 6728895 - 2⁸ = 6728639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 149531 = 6728895 / (6 + 7 + 2 + 8 + 8 + 9 + 5).

It is a d-powerful number, because it can be written as 6⁸ + 7² + 2⁴ + 8⁴ + 8⁶ + 9⁷ + 5 .

It is a self number, because there is not a number n which added to its sum of digits gives 6728895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74721 + ... + 74810.

It is an arithmetic number, because the mean of its divisors is an integer number (971958).

Almost surely, 2^6728895 is an apocalyptic number.

6728895 is a deficient number, since it is larger than the sum of its proper divisors (4934601).

6728895 is a wasteful number, since it uses less digits than its factorization.

6728895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149542 (or 149539 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 6728895 is about 2594.0113723729. The cubic root of 6728895 is about 188.7909841854.

The spelling of 6728895 in words is "six million, seven hundred twenty-eight thousand, eight hundred ninety-five".