520764 has 12 divisors (see below), whose sum is σ = 1215144. Its totient is φ = 173584.

The previous prime is 520763. The next prime is 520787. The reversal of 520764 is 467025.

It is a happy number.

520764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520763) 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, 21687 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (101262).

2⁵²⁰⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

520764 is an abundant number, since it is smaller than the sum of its proper divisors (694380).

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

520764 is a wasteful number, since it uses less digits than its factorization.

520764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43404 (or 43402 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 520764 is about 721.6397993459. The cubic root of 520764 is about 80.4538783935.

Adding to 520764 its reverse (467025), we get a palindrome (987789).

The spelling of 520764 in words is "five hundred twenty thousand, seven hundred sixty-four".