500663 has 4 divisors (see below), whose sum is σ = 503640. Its totient is φ = 497688.

The previous prime is 500629. The next prime is 500671. The reversal of 500663 is 366005.

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 500663 - 2¹⁸ = 238519 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (125910).

2⁵⁰⁰⁶⁶³ is an apocalyptic number.

500663 is a deficient number, since it is larger than the sum of its proper divisors (2977).

500663 is a wasteful number, since it uses less digits than its factorization.

500663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 500663 is about 707.5754376743. The cubic root of 500663 is about 79.4051186670.

Adding to 500663 its reverse (366005), we get a palindrome (866668).

The spelling of 500663 in words is "five hundred thousand, six hundred sixty-three".