6563933421 has 8 divisors (see below), whose sum is σ = 8752692960. Its totient is φ = 4375564752.

The previous prime is 6563933419. The next prime is 6563933437. The reversal of 6563933421 is 1243393656.

It is a happy number.

6563933421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6563933421 - 2¹ = 6563933419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6563933471) 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, 55986 + ... + 127523.

It is an arithmetic number, because the mean of its divisors is an integer number (1094086620).

Almost surely, 2^6563933421 is an apocalyptic number.

It is an amenable number.

6563933421 is a deficient number, since it is larger than the sum of its proper divisors (2188759539).

6563933421 is a wasteful number, since it uses less digits than its factorization.

6563933421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195435.

The product of its digits is 349920, while the sum is 42.

The square root of 6563933421 is about 81018.1055135209. The cubic root of 6563933421 is about 1872.3544006200.

The spelling of 6563933421 in words is "six billion, five hundred sixty-three million, nine hundred thirty-three thousand, four hundred twenty-one".