268666864 has 60 divisors (see below), whose sum is σ = 554736816. Its totient is φ = 125807616.

The previous prime is 268666837. The next prime is 268666877. The reversal of 268666864 is 468666862.

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 11 ways as a sum of consecutive naturals, for example, 1961004 + ... + 1961140.

Almost surely, 2^268666864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268666864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277368408).

268666864 is an abundant number, since it is smaller than the sum of its proper divisors (286069952).

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

268666864 is a wasteful number, since it uses less digits than its factorization.

268666864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 235 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 52.

The square root of 268666864 is about 16391.0604904015. The cubic root of 268666864 is about 645.2648904980.

The spelling of 268666864 in words is "two hundred sixty-eight million, six hundred sixty-six thousand, eight hundred sixty-four".