520063656 has 96 divisors (see below), whose sum is σ = 1526934240. Its totient is φ = 147165312.

The previous prime is 520063651. The next prime is 520063667. The reversal of 520063656 is 656360025.

It is not an unprimeable number, because it can be changed into a prime (520063651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123766 + ... + 127898.

It is an arithmetic number, because the mean of its divisors is an integer number (15905565).

Almost surely, 2^520063656 is an apocalyptic number.

520063656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520063656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763467120).

520063656 is an abundant number, since it is smaller than the sum of its proper divisors (1006870584).

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

520063656 is a wasteful number, since it uses less digits than its factorization.

520063656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263 (or 4252 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 520063656 is about 22804.9042094020. The cubic root of 520063656 is about 804.1779636250.

The spelling of 520063656 in words is "five hundred twenty million, sixty-three thousand, six hundred fifty-six".