268489566 has 40 divisors (see below), whose sum is σ = 616304304. Its totient is φ = 87311520.

The previous prime is 268489541. The next prime is 268489577. The reversal of 268489566 is 665984862.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13570 + ... + 26853.

Almost surely, 2^268489566 is an apocalyptic number.

268489566 is an abundant number, since it is smaller than the sum of its proper divisors (347814738).

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

268489566 is a wasteful number, since it uses less digits than its factorization.

268489566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40478 (or 40469 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 268489566 is about 16385.6512229450. The cubic root of 268489566 is about 645.1229187046.

The spelling of 268489566 in words is "two hundred sixty-eight million, four hundred eighty-nine thousand, five hundred sixty-six".