520565760 has 528 divisors, whose sum is σ = 2145911040. Its totient is φ = 115015680.

The previous prime is 520565753. The next prime is 520565779. The reversal of 520565760 is 67565025.

520565760 is a `hidden beast` number, since 5 + 20 + 565 + 76 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6589401 + ... + 6589479.

Almost surely, 2^520565760 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 520565760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072955520).

520565760 is an abundant number, since it is smaller than the sum of its proper divisors (1625345280).

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

520565760 is a wasteful number, since it uses less digits than its factorization.

520565760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 520565760 is about 22815.9102382526. The cubic root of 520565760 is about 804.4366826565.

The spelling of 520565760 in words is "five hundred twenty million, five hundred sixty-five thousand, seven hundred sixty".