6728863 has 4 divisors (see below), whose sum is σ = 6771880. Its totient is φ = 6685848.

The previous prime is 6728861. The next prime is 6728873. The reversal of 6728863 is 3688276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6728863 - 2¹ = 6728861 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 (6728861) 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, 21273 + ... + 21586.

It is an arithmetic number, because the mean of its divisors is an integer number (1692970).

Almost surely, 2^6728863 is an apocalyptic number.

6728863 is a deficient number, since it is larger than the sum of its proper divisors (43017).

6728863 is a wasteful number, since it uses less digits than its factorization.

6728863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43016.

The product of its digits is 96768, while the sum is 40.

The square root of 6728863 is about 2594.0052043124. The cubic root of 6728863 is about 188.7906849128.

The spelling of 6728863 in words is "six million, seven hundred twenty-eight thousand, eight hundred sixty-three".