268507866 has 16 divisors (see below), whose sum is σ = 585835488. Its totient is φ = 81366000.

The previous prime is 268507831. The next prime is 268507901. The reversal of 268507866 is 668705862.

268507866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (268507831) and next prime (268507901).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034085 + ... + 2034216.

It is an arithmetic number, because the mean of its divisors is an integer number (36614718).

Almost surely, 2^268507866 is an apocalyptic number.

268507866 is an abundant number, since it is smaller than the sum of its proper divisors (317327622).

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

268507866 is a wasteful number, since it uses less digits than its factorization.

268507866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068317.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 268507866 is about 16386.2096288312. The cubic root of 268507866 is about 645.1375753650.

It can be divided in two parts, 26850 and 7866, that added together give a triangular number (34716 = T₂₆₃).

The spelling of 268507866 in words is "two hundred sixty-eight million, five hundred seven thousand, eight hundred sixty-six".