520705 has 8 divisors (see below), whose sum is σ = 628992. Its totient is φ = 413808.

The previous prime is 520703. The next prime is 520717. The reversal of 520705 is 507025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520705 - 2¹ = 520703 is a prime.

It is a super-2 number, since 2×520705² = 542267394050, which contains 22 as substring.

It is a Duffinian number.

520705 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 7 ways as a sum of consecutive naturals, for example, 882 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (78624).

2⁵²⁰⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

520705 is a deficient number, since it is larger than the sum of its proper divisors (108287).

520705 is a wasteful number, since it uses less digits than its factorization.

520705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 520705 is about 721.5989190679. The cubic root of 520705 is about 80.4508399359.

It can be divided in two parts, 520 and 705, that added together give a triangular number (1225 = T₄₉).

The spelling of 520705 in words is "five hundred twenty thousand, seven hundred five".