566409808 has 40 divisors (see below), whose sum is σ = 1165860648. Its totient is φ = 265654272.

The previous prime is 566409797. The next prime is 566409821. The reversal of 566409808 is 808904665.

It can be written as a sum of positive squares in 4 ways, for example, as 9072144 + 557337664 = 3012^2 + 23608^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81810 + ... + 88462.

Almost surely, 2^566409808 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 566409808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582930324).

566409808 is an abundant number, since it is smaller than the sum of its proper divisors (599450840).

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

566409808 is a wasteful number, since it uses less digits than its factorization.

566409808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 566409808 is about 23799.3657058334. The cubic root of 566409808 is about 827.3899759707.

The spelling of 566409808 in words is "five hundred sixty-six million, four hundred nine thousand, eight hundred eight".