268666805 has 48 divisors (see below), whose sum is σ = 375992064. Its totient is φ = 182557440.

The previous prime is 268666799. The next prime is 268666813. The reversal of 268666805 is 508666862.

It is a happy number.

It is not a de Polignac number, because 268666805 - 2²⁸ = 231349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

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 268666805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5069159 + ... + 5069211.

It is an arithmetic number, because the mean of its divisors is an integer number (7833168).

Almost surely, 2^268666805 is an apocalyptic number.

It is an amenable number.

268666805 is a deficient number, since it is larger than the sum of its proper divisors (107325259).

268666805 is a wasteful number, since it uses less digits than its factorization.

268666805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 268666805 is about 16391.0586906398. The cubic root of 268666805 is about 645.2648432640.

The spelling of 268666805 in words is "two hundred sixty-eight million, six hundred sixty-six thousand, eight hundred five".