268686866 has 64 divisors (see below), whose sum is σ = 499979520. Its totient is φ = 105753600.

The previous prime is 268686829. The next prime is 268686871. The reversal of 268686866 is 668686862.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1961150 + ... + 1961286.

It is an arithmetic number, because the mean of its divisors is an integer number (7812180).

Almost surely, 2^268686866 is an apocalyptic number.

268686866 is a deficient number, since it is larger than the sum of its proper divisors (231292654).

268686866 is a wasteful number, since it uses less digits than its factorization.

268686866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

The product of its digits is 7962624, while the sum is 56.

The square root of 268686866 is about 16391.6706287065. The cubic root of 268686866 is about 645.2809032258.

The spelling of 268686866 in words is "two hundred sixty-eight million, six hundred eighty-six thousand, eight hundred sixty-six".