6564023663 has 8 divisors (see below), whose sum is σ = 6950917008. Its totient is φ = 6177216384.

The previous prime is 6564023657. The next prime is 6564023729. The reversal of 6564023663 is 3663204656.

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 6564023663 - 2¹⁴ = 6564007279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6564023663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564023363) 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, 201845 + ... + 232097.

It is an arithmetic number, because the mean of its divisors is an integer number (868864626).

Almost surely, 2^6564023663 is an apocalyptic number.

6564023663 is a deficient number, since it is larger than the sum of its proper divisors (386893345).

6564023663 is a wasteful number, since it uses less digits than its factorization.

6564023663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43033.

The product of its (nonzero) digits is 466560, while the sum is 41.

The square root of 6564023663 is about 81018.6624365029. The cubic root of 6564023663 is about 1872.3629810560.

The spelling of 6564023663 in words is "six billion, five hundred sixty-four million, twenty-three thousand, six hundred sixty-three".