563661303 has 4 divisors (see below), whose sum is σ = 751548408. Its totient is φ = 375774200.

The previous prime is 563661283. The next prime is 563661311. The reversal of 563661303 is 303166365.

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 563661303 - 2¹² = 563657207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563661803) 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, 93943548 + ... + 93943553.

It is an arithmetic number, because the mean of its divisors is an integer number (187887102).

Almost surely, 2^563661303 is an apocalyptic number.

563661303 is a deficient number, since it is larger than the sum of its proper divisors (187887105).

563661303 is a wasteful number, since it uses less digits than its factorization.

563661303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187887104.

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 563661303 is about 23741.5522449565. The cubic root of 563661303 is about 826.0495014373.

The spelling of 563661303 in words is "five hundred sixty-three million, six hundred sixty-one thousand, three hundred three".