568209489 has 4 divisors (see below), whose sum is σ = 757612656. Its totient is φ = 378806324.

The previous prime is 568209437. The next prime is 568209493. The reversal of 568209489 is 984902865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 568209489 - 2¹³ = 568201297 is a prime.

It is a super-2 number, since 2×568209489² = 645724046779282242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (568209409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94701579 + ... + 94701584.

It is an arithmetic number, because the mean of its divisors is an integer number (189403164).

Almost surely, 2^568209489 is an apocalyptic number.

It is an amenable number.

568209489 is a deficient number, since it is larger than the sum of its proper divisors (189403167).

568209489 is a wasteful number, since it uses less digits than its factorization.

568209489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189403166.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 568209489 is about 23837.1451520521. The cubic root of 568209489 is about 828.2653514276.

The spelling of 568209489 in words is "five hundred sixty-eight million, two hundred nine thousand, four hundred eighty-nine".