268641861 has 8 divisors (see below), whose sum is σ = 358464384. Its totient is φ = 178956960.

The previous prime is 268641859. The next prime is 268641883. The reversal of 268641861 is 168146862.

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

It is not a de Polignac number, because 268641861 - 2¹ = 268641859 is a prime.

It is a Smith number, since the sum of its digits (42) 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 (268641661) 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, 29760 + ... + 37721.

It is an arithmetic number, because the mean of its divisors is an integer number (44808048).

Almost surely, 2^268641861 is an apocalyptic number.

It is an amenable number.

268641861 is a deficient number, since it is larger than the sum of its proper divisors (89822523).

268641861 is a wasteful number, since it uses less digits than its factorization.

268641861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68811.

The product of its digits is 110592, while the sum is 42.

The square root of 268641861 is about 16390.2977703274. The cubic root of 268641861 is about 645.2448730703.

The spelling of 268641861 in words is "two hundred sixty-eight million, six hundred forty-one thousand, eight hundred sixty-one".