2688623 has 4 divisors (see below), whose sum is σ = 3072720. Its totient is φ = 2304528.

The previous prime is 2688617. The next prime is 2688629. The reversal of 2688623 is 3268862.

2688623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2688617) and next prime (2688629).

It is a cyclic number.

It is not a de Polignac number, because 2688623 - 2⁶ = 2688559 is a prime.

It is a super-2 number, since 2×2688623² = 14457387272258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688629) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 192038 + ... + 192051.

It is an arithmetic number, because the mean of its divisors is an integer number (768180).

2^2688623 is an apocalyptic number.

2688623 is a deficient number, since it is larger than the sum of its proper divisors (384097).

2688623 is an equidigital number, since it uses as much as digits as its factorization.

2688623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384096.

The product of its digits is 27648, while the sum is 35.

The square root of 2688623 is about 1639.7021070914. The cubic root of 2688623 is about 139.0518068536.

The spelling of 2688623 in words is "two million, six hundred eighty-eight thousand, six hundred twenty-three".