520830769 has 2 divisors, whose sum is σ = 520830770. Its totient is φ = 520830768.

The previous prime is 520830757. The next prime is 520830787. The reversal of 520830769 is 967038025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502297744 + 18533025 = 22412^2 + 4305^2 .

It is a cyclic number.

It is not a de Polignac number, because 520830769 - 2¹⁵ = 520798001 is a prime.

It is a super-2 number, since 2×520830769² = 542529379874262722, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (520830799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260415384 + 260415385.

It is an arithmetic number, because the mean of its divisors is an integer number (260415385).

Almost surely, 2^520830769 is an apocalyptic number.

It is an amenable number.

520830769 is a deficient number, since it is larger than the sum of its proper divisors (1).

520830769 is an equidigital number, since it uses as much as digits as its factorization.

520830769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 520830769 is about 22821.7170475843. The cubic root of 520830769 is about 804.5731667230.

The spelling of 520830769 in words is "five hundred twenty million, eight hundred thirty thousand, seven hundred sixty-nine".