2688047 has 4 divisors (see below), whose sum is σ = 2691360. Its totient is φ = 2684736.

The previous prime is 2688019. The next prime is 2688053. The reversal of 2688047 is 7408862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2688047 - 2⁶ = 2687983 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 8³ + 8⁷ + 0 + 4⁸ + 7³ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2687998 and 2688016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688017) 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, 479 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (672840).

2^2688047 is an apocalyptic number.

2688047 is a deficient number, since it is larger than the sum of its proper divisors (3313).

2688047 is a wasteful number, since it uses less digits than its factorization.

2688047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2688047 is about 1639.5264560232. The cubic root of 2688047 is about 139.0418761739.

The spelling of 2688047 in words is "two million, six hundred eighty-eight thousand, forty-seven".