2868685 has 4 divisors (see below), whose sum is σ = 3442428. Its totient is φ = 2294944.

The previous prime is 2868673. The next prime is 2868689. The reversal of 2868685 is 5868682.

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 1671849 + 1196836 = 1293^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2868685 - 2⁷ = 2868557 is a prime.

It is a Duffinian number.

2868685 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286864 + ... + 286873.

It is an arithmetic number, because the mean of its divisors is an integer number (860607).

2^2868685 is an apocalyptic number.

It is an amenable number.

2868685 is a deficient number, since it is larger than the sum of its proper divisors (573743).

2868685 is an equidigital number, since it uses as much as digits as its factorization.

2868685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573742.

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

The square root of 2868685 is about 1693.7192801642. The cubic root of 2868685 is about 142.0891624119.

It can be divided in two parts, 2868 and 685, that added together give a palindrome (3553).

The spelling of 2868685 in words is "two million, eight hundred sixty-eight thousand, six hundred eighty-five".