268533905 has 4 divisors (see below), whose sum is σ = 322240692. Its totient is φ = 214827120.

The previous prime is 268533847. The next prime is 268533907. The reversal of 268533905 is 509335862.

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 184334929 + 84198976 = 13577^2 + 9176^2 .

It is not a de Polignac number, because 268533905 - 2⁶ = 268533841 is a prime.

It is a super-2 number, since 2×268533905² = 144220916269098050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268533907) 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, 26853386 + ... + 26853395.

It is an arithmetic number, because the mean of its divisors is an integer number (80560173).

Almost surely, 2^268533905 is an apocalyptic number.

It is an amenable number.

268533905 is a deficient number, since it is larger than the sum of its proper divisors (53706787).

268533905 is an equidigital number, since it uses as much as digits as its factorization.

268533905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53706786.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 268533905 is about 16387.0041496303. The cubic root of 268533905 is about 645.1584291232.

The spelling of 268533905 in words is "two hundred sixty-eight million, five hundred thirty-three thousand, nine hundred five".