6563423 has 4 divisors (see below), whose sum is σ = 6572328. Its totient is φ = 6554520.

The previous prime is 6563419. The next prime is 6563437. The reversal of 6563423 is 3243656.

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 6563423 - 2² = 6563419 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 (6563443) 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, 3236 + ... + 4857.

It is an arithmetic number, because the mean of its divisors is an integer number (1643082).

Almost surely, 2^6563423 is an apocalyptic number.

6563423 is a deficient number, since it is larger than the sum of its proper divisors (8905).

6563423 is an equidigital number, since it uses as much as digits as its factorization.

6563423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904.

The product of its digits is 12960, while the sum is 29.

The square root of 6563423 is about 2561.9178363094. The cubic root of 6563423 is about 187.2305867029.

The spelling of 6563423 in words is "six million, five hundred sixty-three thousand, four hundred twenty-three".