565165440 has 384 divisors, whose sum is σ = 2268414720. Its totient is φ = 126996480.

The previous prime is 565165439. The next prime is 565165463. The reversal of 565165440 is 44561565.

565165440 is a `hidden beast` number, since 56 + 5 + 165 + 440 = 666.

565165440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a junction number, because it is equal to n+sod(n) for n = 565165395 and 565165404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4314175 + ... + 4314305.

It is an arithmetic number, because the mean of its divisors is an integer number (5907330).

Almost surely, 2^565165440 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 565165440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134207360).

565165440 is an abundant number, since it is smaller than the sum of its proper divisors (1703249280).

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

565165440 is a wasteful number, since it uses less digits than its factorization.

565165440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 565165440 is about 23773.2084498496. The cubic root of 565165440 is about 826.7836231794.

The spelling of 565165440 in words is "five hundred sixty-five million, one hundred sixty-five thousand, four hundred forty".