520966656 has 240 divisors, whose sum is σ = 1777171968. Its totient is φ = 143769600.

The previous prime is 520966639. The next prime is 520966661. The reversal of 520966656 is 656669025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999676 + ... + 1000196.

Almost surely, 2^520966656 is an apocalyptic number.

520966656 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 520966656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888585984).

520966656 is an abundant number, since it is smaller than the sum of its proper divisors (1256205312).

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

520966656 is a wasteful number, since it uses less digits than its factorization.

520966656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 520966656 is about 22824.6939957582. The cubic root of 520966656 is about 804.6431328447.

The spelling of 520966656 in words is "five hundred twenty million, nine hundred sixty-six thousand, six hundred fifty-six".