566009856 has 140 divisors (see below), whose sum is σ = 1692920922. Its totient is φ = 188448768.

The previous prime is 566009837. The next prime is 566009863. The reversal of 566009856 is 658900665.

566009856 is a `hidden beast` number, since 566 + 0 + 0 + 9 + 85 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 557715456 + 8294400 = 23616^2 + 2880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 663126 + ... + 663978.

Almost surely, 2^566009856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566009856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846460461).

566009856 is an abundant number, since it is smaller than the sum of its proper divisors (1126911066).

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

566009856 is an frugal number, since it uses more digits than its factorization.

566009856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 566009856 is about 23790.9616451290. The cubic root of 566009856 is about 827.1951852084.

The spelling of 566009856 in words is "five hundred sixty-six million, nine thousand, eight hundred fifty-six".