268587985 has 4 divisors (see below), whose sum is σ = 322305588. Its totient is φ = 214870384.

The previous prime is 268587983. The next prime is 268588003. The reversal of 268587985 is 589785862.

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 53114944 + 215473041 = 7288^2 + 14679^2 .

It is a cyclic number.

It is not a de Polignac number, because 268587985 - 2¹ = 268587983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268587983) 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, 26858794 + ... + 26858803.

It is an arithmetic number, because the mean of its divisors is an integer number (80576397).

Almost surely, 2^268587985 is an apocalyptic number.

It is an amenable number.

268587985 is a deficient number, since it is larger than the sum of its proper divisors (53717603).

268587985 is an equidigital number, since it uses as much as digits as its factorization.

268587985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53717602.

The product of its digits is 9676800, while the sum is 58.

The square root of 268587985 is about 16388.6541546278. The cubic root of 268587985 is about 645.2017356670.

It can be divided in two parts, 26858 and 7985, that added together give a palindrome (34843).

The spelling of 268587985 in words is "two hundred sixty-eight million, five hundred eighty-seven thousand, nine hundred eighty-five".