2688506 has 16 divisors (see below), whose sum is σ = 4213248. Its totient is φ = 1285200.

The previous prime is 2688487. The next prime is 2688523. The reversal of 2688506 is 6058862.

2688506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6176 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (263328).

2^2688506 is an apocalyptic number.

2688506 is a deficient number, since it is larger than the sum of its proper divisors (1524742).

2688506 is a wasteful number, since it uses less digits than its factorization.

2688506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2688506 is about 1639.6664294911. Note that the first 3 decimals coincide. The cubic root of 2688506 is about 139.0497897991.

The spelling of 2688506 in words is "two million, six hundred eighty-eight thousand, five hundred six".