268666863 has 8 divisors (see below), whose sum is σ = 369778176. Its totient is φ = 173333400.

The previous prime is 268666837. The next prime is 268666877. The reversal of 268666863 is 368666862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268666863 - 2⁶ = 268666799 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268666813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1444353 + ... + 1444538.

It is an arithmetic number, because the mean of its divisors is an integer number (46222272).

Almost surely, 2^268666863 is an apocalyptic number.

268666863 is a deficient number, since it is larger than the sum of its proper divisors (101111313).

268666863 is a wasteful number, since it uses less digits than its factorization.

268666863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888925.

The product of its digits is 2985984, while the sum is 51.

The square root of 268666863 is about 16391.0604598970. The cubic root of 268666863 is about 645.2648896974.

Subtracting 268666863 from its reverse (368666862), we obtain a palindrome (99999999).

The spelling of 268666863 in words is "two hundred sixty-eight million, six hundred sixty-six thousand, eight hundred sixty-three".