268813285 has 16 divisors (see below), whose sum is σ = 347736816. Its totient is φ = 198309888.

The previous prime is 268813283. The next prime is 268813289. The reversal of 268813285 is 582318862.

It can be written as a sum of positive squares in 8 ways, for example, as 23483716 + 245329569 = 4846^2 + 15663^2 .

It is a cyclic number.

It is not a de Polignac number, because 268813285 - 2¹ = 268813283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268813283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109087 + ... + 111523.

It is an arithmetic number, because the mean of its divisors is an integer number (21733551).

Almost surely, 2^268813285 is an apocalyptic number.

It is an amenable number.

268813285 is a deficient number, since it is larger than the sum of its proper divisors (78923531).

268813285 is a wasteful number, since it uses less digits than its factorization.

268813285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152.

The product of its digits is 184320, while the sum is 43.

The square root of 268813285 is about 16395.5263715442. The cubic root of 268813285 is about 645.3820903773.

The spelling of 268813285 in words is "two hundred sixty-eight million, eight hundred thirteen thousand, two hundred eighty-five".