268424863 has 4 divisors (see below), whose sum is σ = 306771280. Its totient is φ = 230078448.

The previous prime is 268424809. The next prime is 268424873. The reversal of 268424863 is 368424862.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268424863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268424873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19173198 + ... + 19173211.

It is an arithmetic number, because the mean of its divisors is an integer number (76692820).

Almost surely, 2^268424863 is an apocalyptic number.

268424863 is a deficient number, since it is larger than the sum of its proper divisors (38346417).

268424863 is an equidigital number, since it uses as much as digits as its factorization.

268424863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38346416.

The product of its digits is 442368, while the sum is 43.

The square root of 268424863 is about 16383.6767241056. The cubic root of 268424863 is about 645.0710920578.

Subtracting 268424863 from its reverse (368424862), we obtain a palindrome (99999999).

The spelling of 268424863 in words is "two hundred sixty-eight million, four hundred twenty-four thousand, eight hundred sixty-three".