520713770 has 16 divisors (see below), whose sum is σ = 937596168. Its totient is φ = 208216320.

The previous prime is 520713737. The next prime is 520713779. The reversal of 520713770 is 77317025.

It can be written as a sum of positive squares in 4 ways, for example, as 417670969 + 103042801 = 20437^2 + 10151^2 .

It is a super-2 number, since 2×520713770² = 542285660535225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520713779) 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, 32102 + ... + 45518.

Almost surely, 2^520713770 is an apocalyptic number.

520713770 is a deficient number, since it is larger than the sum of its proper divisors (416882398).

520713770 is a wasteful number, since it uses less digits than its factorization.

520713770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17305.

The product of its (nonzero) digits is 10290, while the sum is 32.

The square root of 520713770 is about 22819.1535776417. The cubic root of 520713770 is about 804.5129159908.

The spelling of 520713770 in words is "five hundred twenty million, seven hundred thirteen thousand, seven hundred seventy".