268353805 has 4 divisors (see below), whose sum is σ = 322024572. Its totient is φ = 214683040.

The previous prime is 268353793. The next prime is 268353829. The reversal of 268353805 is 508353862.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101969604 + 166384201 = 10098^2 + 12899^2 .

It is not a de Polignac number, because 268353805 - 2¹⁷ = 268222733 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26835376 + ... + 26835385.

It is an arithmetic number, because the mean of its divisors is an integer number (80506143).

Almost surely, 2^268353805 is an apocalyptic number.

It is an amenable number.

268353805 is a deficient number, since it is larger than the sum of its proper divisors (53670767).

268353805 is an equidigital number, since it uses as much as digits as its factorization.

268353805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53670766.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 268353805 is about 16381.5080197154. The cubic root of 268353805 is about 645.0141655043.

The spelling of 268353805 in words is "two hundred sixty-eight million, three hundred fifty-three thousand, eight hundred five".