566785440 has 432 divisors, whose sum is σ = 2233766808. Its totient is φ = 130351104.

The previous prime is 566785397. The next prime is 566785459. The reversal of 566785440 is 44587665.

566785440 is a `hidden beast` number, since 566 + 7 + 85 + 4 + 4 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 8503056 + 558282384 = 2916^2 + 23628^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4137052 + ... + 4137188.

Almost surely, 2^566785440 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 566785440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116883404).

566785440 is an abundant number, since it is smaller than the sum of its proper divisors (1666981368).

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

566785440 is a wasteful number, since it uses less digits than its factorization.

566785440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 566785440 is about 23807.2560367632. The cubic root of 566785440 is about 827.5728385484.

The spelling of 566785440 in words is "five hundred sixty-six million, seven hundred eighty-five thousand, four hundred forty".