565783280 has 40 divisors (see below), whose sum is σ = 1351005792. Its totient is φ = 220195584.

The previous prime is 565783213. The next prime is 565783289. The reversal of 565783280 is 82387565.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×565783280³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565783289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92612 + ... + 98531.

Almost surely, 2^565783280 is an apocalyptic number.

It is an amenable number.

565783280 is an abundant number, since it is smaller than the sum of its proper divisors (785222512).

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

565783280 is a wasteful number, since it uses less digits than its factorization.

565783280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191193 (or 191187 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 565783280 is about 23786.1993601332. The cubic root of 565783280 is about 827.0847939679.

The spelling of 565783280 in words is "five hundred sixty-five million, seven hundred eighty-three thousand, two hundred eighty".