566820369 has 16 divisors (see below), whose sum is σ = 883931200. Its totient is φ = 357991488.

The previous prime is 566820361. The next prime is 566820379. The reversal of 566820369 is 963028665.

It is a happy number.

566820369 is a `hidden beast` number, since 566 + 8 + 20 + 3 + 69 = 666.

It is not a de Polignac number, because 566820369 - 2³ = 566820361 is a prime.

It is a super-3 number, since 3×566820369³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566820361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551944 + ... + 552969.

It is an arithmetic number, because the mean of its divisors is an integer number (55245700).

Almost surely, 2^566820369 is an apocalyptic number.

It is an amenable number.

566820369 is a deficient number, since it is larger than the sum of its proper divisors (317110831).

566820369 is a wasteful number, since it uses less digits than its factorization.

566820369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104941 (or 1104935 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 566820369 is about 23807.9896043324. The cubic root of 566820369 is about 827.5898383370.

The spelling of 566820369 in words is "five hundred sixty-six million, eight hundred twenty thousand, three hundred sixty-nine".