520606869 has 16 divisors (see below), whose sum is σ = 719971200. Its totient is φ = 334220096.

The previous prime is 520606843. The next prime is 520606883. The reversal of 520606869 is 968606025.

It is a cyclic number.

It is not a de Polignac number, because 520606869 - 2⁵ = 520606837 is a prime.

It is a super-2 number, since 2×520606869² = 542063024099966322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520606869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520606829) 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, 26152 + ... + 41534.

It is an arithmetic number, because the mean of its divisors is an integer number (44998200).

Almost surely, 2^520606869 is an apocalyptic number.

It is an amenable number.

520606869 is a deficient number, since it is larger than the sum of its proper divisors (199364331).

520606869 is a wasteful number, since it uses less digits than its factorization.

520606869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15804.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 520606869 is about 22816.8111049726. The cubic root of 520606869 is about 804.4578575138.

The spelling of 520606869 in words is "five hundred twenty million, six hundred six thousand, eight hundred sixty-nine".