565581960 has 128 divisors (see below), whose sum is σ = 1967328000. Its totient is φ = 144258048.

The previous prime is 565581943. The next prime is 565581971. The reversal of 565581960 is 69185565.

It is a happy number.

565581960 is a `hidden beast` number, since 5 + 6 + 5 + 581 + 9 + 60 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13456 + ... + 36224.

It is an arithmetic number, because the mean of its divisors is an integer number (15369750).

Almost surely, 2^565581960 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 565581960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983664000).

565581960 is an abundant number, since it is smaller than the sum of its proper divisors (1401746040).

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

565581960 is a wasteful number, since it uses less digits than its factorization.

565581960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22812 (or 22802 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 565581960 is about 23781.9671179657. The cubic root of 565581960 is about 826.9866831011.

The spelling of 565581960 in words is "five hundred sixty-five million, five hundred eighty-one thousand, nine hundred sixty".