565785984 has 64 divisors (see below), whose sum is σ = 1507184640. Its totient is φ = 188054016.

The previous prime is 565785967. The next prime is 565786021. The reversal of 565785984 is 489587565.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×565785984² = 640227559381696512, which contains 22 as substring.

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, 145149 + ... + 148995.

It is an arithmetic number, because the mean of its divisors is an integer number (23549760).

Almost surely, 2^565785984 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 565785984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753592320).

565785984 is an abundant number, since it is smaller than the sum of its proper divisors (941398656).

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

565785984 is a wasteful number, since it uses less digits than its factorization.

565785984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247 (or 4235 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 57.

The square root of 565785984 is about 23786.2561997469. The cubic root of 565785984 is about 827.0861115712.

The spelling of 565785984 in words is "five hundred sixty-five million, seven hundred eighty-five thousand, nine hundred eighty-four".