520324663 has 4 divisors (see below), whose sum is σ = 520371208. Its totient is φ = 520278120.

The previous prime is 520324631. The next prime is 520324669. The reversal of 520324663 is 366423025.

It is a happy number.

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 520324663 - 2⁵ = 520324631 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 (520324669) 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, 4720 + ... + 32602.

It is an arithmetic number, because the mean of its divisors is an integer number (130092802).

Almost surely, 2^520324663 is an apocalyptic number.

520324663 is a deficient number, since it is larger than the sum of its proper divisors (46545).

520324663 is a wasteful number, since it uses less digits than its factorization.

520324663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46544.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 520324663 is about 22810.6260983779. The cubic root of 520324663 is about 804.3124734241.

Adding to 520324663 its reverse (366423025), we get a palindrome (886747688).

The spelling of 520324663 in words is "five hundred twenty million, three hundred twenty-four thousand, six hundred sixty-three".