520986 has 16 divisors (see below), whose sum is σ = 1075968. Its totient is φ = 168000.

The previous prime is 520981. The next prime is 521009. The reversal of 520986 is 689025.

520986 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (520981) by changing a digit.

520986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (67248).

2⁵²⁰⁹⁸⁶ is an apocalyptic number.

520986 is an abundant number, since it is smaller than the sum of its proper divisors (554982).

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

520986 is a wasteful number, since it uses less digits than its factorization.

520986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 520986 is about 721.7935993066. The cubic root of 520986 is about 80.4653091783.

The spelling of 520986 in words is "five hundred twenty thousand, nine hundred eighty-six".