268435861 has 16 divisors (see below), whose sum is σ = 282844800. Its totient is φ = 254415168.

The previous prime is 268435823. The next prime is 268435873. The reversal of 268435861 is 168534862.

It is a cyclic number.

It is not a de Polignac number, because 268435861 - 2¹¹ = 268433813 is a prime.

It is a super-2 number, since 2×268435861² = 144115622941622642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268435361) 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, 550960 + ... + 551446.

It is an arithmetic number, because the mean of its divisors is an integer number (17677800).

Almost surely, 2^268435861 is an apocalyptic number.

It is an amenable number.

268435861 is a deficient number, since it is larger than the sum of its proper divisors (14408939).

268435861 is a wasteful number, since it uses less digits than its factorization.

268435861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its digits is 276480, while the sum is 43.

The square root of 268435861 is about 16384.0123596145. The cubic root of 268435861 is about 645.0799019657.

Subtracting from 268435861 its reverse (168534862), we obtain a palindrome (99900999).

The spelling of 268435861 in words is "two hundred sixty-eight million, four hundred thirty-five thousand, eight hundred sixty-one".