268081666 has 8 divisors (see below), whose sum is σ = 402232320. Its totient is φ = 134004228.

The previous prime is 268081643. The next prime is 268081669. The reversal of 268081666 is 666180862.

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

It is not an unprimeable number, because it can be changed into a prime (268081669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7986 + ... + 24493.

It is an arithmetic number, because the mean of its divisors is an integer number (50279040).

Almost surely, 2^268081666 is an apocalyptic number.

268081666 is a deficient number, since it is larger than the sum of its proper divisors (134150654).

268081666 is a wasteful number, since it uses less digits than its factorization.

268081666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36608.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 268081666 is about 16373.1996262185. The cubic root of 268081666 is about 644.7960543432.

The spelling of 268081666 in words is "two hundred sixty-eight million, eighty-one thousand, six hundred sixty-six".