2688539 has 8 divisors (see below), whose sum is σ = 3206400. Its totient is φ = 2204136.

The previous prime is 2688529. The next prime is 2688547. The reversal of 2688539 is 9358862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2688539 - 2⁴ = 2688523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2688496 and 2688505.

It is not an unprimeable number, because it can be changed into a prime (2688529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8189 + ... + 8510.

It is an arithmetic number, because the mean of its divisors is an integer number (400800).

2^2688539 is an apocalyptic number.

2688539 is a deficient number, since it is larger than the sum of its proper divisors (517861).

2688539 is a wasteful number, since it uses less digits than its factorization.

2688539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16729.

The product of its digits is 103680, while the sum is 41.

The square root of 2688539 is about 1639.6764924826. The cubic root of 2688539 is about 139.0503587178.

It can be divided in two parts, 268853 and 9, that added together give a palindrome (268862).

The spelling of 2688539 in words is "two million, six hundred eighty-eight thousand, five hundred thirty-nine".