520844863 has 36 divisors (see below), whose sum is σ = 673010856. Its totient is φ = 401570400.

The previous prime is 520844851. The next prime is 520844879. The reversal of 520844863 is 368448025.

It is a de Polignac number, because none of the positive numbers 2^k-520844863 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520841863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 633993 + ... + 634813.

It is an arithmetic number, because the mean of its divisors is an integer number (18694746).

Almost surely, 2^520844863 is an apocalyptic number.

520844863 is a deficient number, since it is larger than the sum of its proper divisors (152165993).

520844863 is a wasteful number, since it uses less digits than its factorization.

520844863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 520844863 is about 22822.0258303245. The cubic root of 520844863 is about 804.5804240720.

The spelling of 520844863 in words is "five hundred twenty million, eight hundred forty-four thousand, eight hundred sixty-three".