6563897 has 4 divisors (see below), whose sum is σ = 6608100. Its totient is φ = 6519696.

The previous prime is 6563867. The next prime is 6563929. The reversal of 6563897 is 7983656.

6563897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2627641 + 3936256 = 1621^2 + 1984^2 .

It is a cyclic number.

It is not a de Polignac number, because 6563897 - 2⁶ = 6563833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6563857) 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, 21878 + ... + 22175.

It is an arithmetic number, because the mean of its divisors is an integer number (1652025).

Almost surely, 2^6563897 is an apocalyptic number.

It is an amenable number.

6563897 is a deficient number, since it is larger than the sum of its proper divisors (44203).

6563897 is a wasteful number, since it uses less digits than its factorization.

6563897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44202.

The product of its digits is 272160, while the sum is 44.

The square root of 6563897 is about 2562.0103434608. The cubic root of 6563897 is about 187.2350937598.

The spelling of 6563897 in words is "six million, five hundred sixty-three thousand, eight hundred ninety-seven".