268866247 has 4 divisors (see below), whose sum is σ = 289548280. Its totient is φ = 248184216.

The previous prime is 268866217. The next prime is 268866253. The reversal of 268866247 is 742668862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268866247 - 2⁷ = 268866119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268866247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268866217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10340997 + ... + 10341022.

It is an arithmetic number, because the mean of its divisors is an integer number (72387070).

Almost surely, 2^268866247 is an apocalyptic number.

268866247 is a deficient number, since it is larger than the sum of its proper divisors (20682033).

268866247 is a wasteful number, since it uses less digits than its factorization.

268866247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20682032.

The product of its digits is 1548288, while the sum is 49.

The square root of 268866247 is about 16397.1414277001. The cubic root of 268866247 is about 645.4244723126.

It can be divided in two parts, 26886 and 6247, that added together give a palindrome (33133).

The spelling of 268866247 in words is "two hundred sixty-eight million, eight hundred sixty-six thousand, two hundred forty-seven".