520680 has 32 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 138816.

The previous prime is 520679. The next prime is 520691. The reversal of 520680 is 86025.

It is a happy number.

520680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×520680² = 542215324800, which contains 22 as substring.

It is a nialpdrome in base 15.

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, 2050 + ... + 2289.

It is an arithmetic number, because the mean of its divisors is an integer number (48825).

2⁵²⁰⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

520680 is an abundant number, since it is smaller than the sum of its proper divisors (1041720).

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

520680 is a wasteful number, since it uses less digits than its factorization.

520680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353 (or 4349 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 520680 is about 721.5815962176. The cubic root of 520680 is about 80.4495523846.

The spelling of 520680 in words is "five hundred twenty thousand, six hundred eighty".