568864491 has 16 divisors (see below), whose sum is σ = 818496000. Its totient is φ = 349356960.

The previous prime is 568864469. The next prime is 568864507. The reversal of 568864491 is 194468865.

It is not a de Polignac number, because 568864491 - 2¹¹ = 568862443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (568864091) 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, 4846 + ... + 34076.

It is an arithmetic number, because the mean of its divisors is an integer number (51156000).

Almost surely, 2^568864491 is an apocalyptic number.

568864491 is a deficient number, since it is larger than the sum of its proper divisors (249631509).

568864491 is a wasteful number, since it uses less digits than its factorization.

568864491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29746.

The product of its digits is 1658880, while the sum is 51.

The square root of 568864491 is about 23850.8802982196. The cubic root of 568864491 is about 828.5834894527.

The spelling of 568864491 in words is "five hundred sixty-eight million, eight hundred sixty-four thousand, four hundred ninety-one".