564644500663 has 4 divisors (see below), whose sum is σ = 564646203280. Its totient is φ = 564642798048.

The previous prime is 564644500573. The next prime is 564644500727. The reversal of 564644500663 is 366005446465.

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 564644500663 - 2¹⁷ = 564644369591 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 (564644500963) 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, 174498 + ... + 1076911.

It is an arithmetic number, because the mean of its divisors is an integer number (141161550820).

Almost surely, 2^564644500663 is an apocalyptic number.

564644500663 is a deficient number, since it is larger than the sum of its proper divisors (1702617).

564644500663 is a wasteful number, since it uses less digits than its factorization.

564644500663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702616.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 564644500663 in words is "five hundred sixty-four billion, six hundred forty-four million, five hundred thousand, six hundred sixty-three".