6563873 has 8 divisors (see below), whose sum is σ = 6998400. Its totient is φ = 6138288.

The previous prime is 6563867. The next prime is 6563929. The reversal of 6563873 is 3783656.

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

It is a cyclic number.

It is not a de Polignac number, because 6563873 - 2⁴ = 6563857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6563803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686 + ... + 3687.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^6563873 is an apocalyptic number.

It is an amenable number.

6563873 is a deficient number, since it is larger than the sum of its proper divisors (434527).

6563873 is a wasteful number, since it uses less digits than its factorization.

6563873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471.

The product of its digits is 90720, while the sum is 38.

The square root of 6563873 is about 2562.0056596347. The cubic root of 6563873 is about 187.2348655596.

The spelling of 6563873 in words is "six million, five hundred sixty-three thousand, eight hundred seventy-three".