64563 has 4 divisors (see below), whose sum is σ = 86088. Its totient is φ = 43040.
The previous prime is 64553. The next prime is 64567. The reversal of 64563 is 36546.
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 64563 - 26 = 64499 is a prime.
It is a D-number.
It is a nialpdrome in base 16.
It is a zygodrome in base 2.
It is not an unprimeable number, because it can be changed into a prime (64567) 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, 10758 + ... + 10763.
It is an arithmetic number, because the mean of its divisors is an integer number (21522).
264563 is an apocalyptic number.
64563 is a deficient number, since it is larger than the sum of its proper divisors (21525).
64563 is a wasteful number, since it uses less digits than its factorization.
64563 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21524.
The product of its digits is 2160, while the sum is 24.
The square root of 64563 is about 254.0925028410. The cubic root of 64563 is about 40.1169494044.
The spelling of 64563 in words is "sixty-four thousand, five hundred sixty-three".
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