520707 has 16 divisors (see below), whose sum is σ = 783360. Its totient is φ = 304800.

The previous prime is 520703. The next prime is 520717. The reversal of 520707 is 707025.

It is not a de Polignac number, because 520707 - 2² = 520703 is a prime.

It is a super-4 number, since 4×520707⁴ (a number of 24 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

520707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (520703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (48960).

2⁵²⁰⁷⁰⁷ is an apocalyptic number.

520707 is a deficient number, since it is larger than the sum of its proper divisors (262653).

520707 is a wasteful number, since it uses less digits than its factorization.

520707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 490, while the sum is 21.

The square root of 520707 is about 721.6003048780. The cubic root of 520707 is about 80.4509429382.

The spelling of 520707 in words is "five hundred twenty thousand, seven hundred seven".