566021808 has 120 divisors (see below), whose sum is σ = 1783981056. Its totient is φ = 165974400.

The previous prime is 566021803. The next prime is 566021831. The reversal of 566021808 is 808120665.

It is a happy number.

566021808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (566021803) 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, 43341 + ... + 54867.

Almost surely, 2^566021808 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 566021808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891990528).

566021808 is an abundant number, since it is smaller than the sum of its proper divisors (1217959248).

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

566021808 is a wasteful number, since it uses less digits than its factorization.

566021808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11583 (or 11574 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 566021808 is about 23791.2128316318. The cubic root of 566021808 is about 827.2010075848.

The spelling of 566021808 in words is "five hundred sixty-six million, twenty-one thousand, eight hundred eight".