6563995 has 8 divisors (see below), whose sum is σ = 7939584. Its totient is φ = 5209344.

The previous prime is 6563983. The next prime is 6564001. The reversal of 6563995 is 5993656.

It is a happy number.

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 6563995 - 2⁷ = 6563867 is a prime.

It is a Duffinian number.

6563995 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4534 + ... + 5803.

It is an arithmetic number, because the mean of its divisors is an integer number (992448).

Almost surely, 2^6563995 is an apocalyptic number.

6563995 is a deficient number, since it is larger than the sum of its proper divisors (1375589).

6563995 is a wasteful number, since it uses less digits than its factorization.

6563995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10469.

The product of its digits is 218700, while the sum is 43.

The square root of 6563995 is about 2562.0294689952. The cubic root of 6563995 is about 187.2360255714.

It can be divided in two parts, 6 and 563995, that added together give a square (564001 = 751²).

The spelling of 6563995 in words is "six million, five hundred sixty-three thousand, nine hundred ninety-five".