520802568 has 192 divisors, whose sum is σ = 1710244800. Its totient is φ = 145566720.

The previous prime is 520802549. The next prime is 520802609. The reversal of 520802568 is 865208025.

520802568 is a `hidden beast` number, since 520 + 80 + 2 + 56 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400896 + ... + 402192.

It is an arithmetic number, because the mean of its divisors is an integer number (8907525).

Almost surely, 2^520802568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520802568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855122400).

520802568 is an abundant number, since it is smaller than the sum of its proper divisors (1189442232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520802568 is a wasteful number, since it uses less digits than its factorization.

520802568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 520802568 is about 22821.0991847457. The cubic root of 520802568 is about 804.5586449380.

The spelling of 520802568 in words is "five hundred twenty million, eight hundred two thousand, five hundred sixty-eight".