630563 has 4 divisors (see below), whose sum is σ = 632160. Its totient is φ = 628968.

The previous prime is 630559. The next prime is 630577. The reversal of 630563 is 365036.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 630563 - 2² = 630559 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (158040).

2⁶³⁰⁵⁶³ is an apocalyptic number.

630563 is a deficient number, since it is larger than the sum of its proper divisors (1597).

630563 is an equidigital number, since it uses as much as digits as its factorization.

630563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 630563 is about 794.0799707838. The cubic root of 630563 is about 85.7517176456.

Adding to 630563 its reverse (365036), we get a palindrome (995599).

The spelling of 630563 in words is "six hundred thirty thousand, five hundred sixty-three".