520205616 has 60 divisors (see below), whose sum is σ = 1663835472. Its totient is φ = 148629888.

The previous prime is 520205551. The next prime is 520205633. The reversal of 520205616 is 616502025.

520205616 is a `hidden beast` number, since 5 + 20 + 20 + 5 + 616 = 666.

It is a super-2 number, since 2×520205616² = 541227765835878912, 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 520205616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257031 + ... + 259046.

Almost surely, 2^520205616 is an apocalyptic number.

520205616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

520205616 is an abundant number, since it is smaller than the sum of its proper divisors (1143629856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520205616 is a wasteful number, since it uses less digits than its factorization.

520205616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516098 (or 516089 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 520205616 is about 22808.0164854377. The cubic root of 520205616 is about 804.2511282056.

The spelling of 520205616 in words is "five hundred twenty million, two hundred five thousand, six hundred sixteen".