520002664 has 32 divisors (see below), whose sum is σ = 1034198280. Its totient is φ = 244271104.

The previous prime is 520002617. The next prime is 520002677. The reversal of 520002664 is 466200025.

It can be written as a sum of positive squares in 4 ways, for example, as 351262564 + 168740100 = 18742^2 + 12990^2 .

520002664 is a modest number, since divided by 2664 gives 520 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80814 + ... + 87010.

Almost surely, 2^520002664 is an apocalyptic number.

It is an amenable number.

520002664 is a deficient number, since it is larger than the sum of its proper divisors (514195616).

520002664 is a wasteful number, since it uses less digits than its factorization.

520002664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6837 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 520002664 is about 22803.5669139720. The cubic root of 520002664 is about 804.1465249480.

Adding to 520002664 its reverse (466200025), we get a palindrome (986202689).

The spelling of 520002664 in words is "five hundred twenty million, two thousand, six hundred sixty-four".