268489569 has 16 divisors (see below), whose sum is σ = 375865920. Its totient is φ = 170237760.

The previous prime is 268489541. The next prime is 268489577. The reversal of 268489569 is 965984862.

It is not a de Polignac number, because 268489569 - 2¹¹ = 268487521 is a prime.

It is a super-2 number, since 2×268489569² = 144173297323611522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (268489579) 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, 17202 + ... + 28859.

It is an arithmetic number, because the mean of its divisors is an integer number (23491620).

Almost surely, 2^268489569 is an apocalyptic number.

268489569 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

268489569 is a deficient number, since it is larger than the sum of its proper divisors (107376351).

268489569 is a wasteful number, since it uses less digits than its factorization.

268489569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46160.

The product of its digits is 7464960, while the sum is 57.

The square root of 268489569 is about 16385.6513144885. The cubic root of 268489569 is about 645.1229211074.

The spelling of 268489569 in words is "two hundred sixty-eight million, four hundred eighty-nine thousand, five hundred sixty-nine".