2640873 has 8 divisors (see below), whose sum is σ = 3579136. Its totient is φ = 1731600.

The previous prime is 2640871. The next prime is 2640881. The reversal of 2640873 is 3780462.

2640873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2640873 - 2¹ = 2640871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2640873.

It is not an unprimeable number, because it can be changed into a prime (2640871) 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 7 ways as a sum of consecutive naturals, for example, 7033 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (447392).

2^2640873 is an apocalyptic number.

It is an amenable number.

2640873 is a deficient number, since it is larger than the sum of its proper divisors (938263).

2640873 is a wasteful number, since it uses less digits than its factorization.

2640873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14495.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2640873 is about 1625.0763059007. The cubic root of 2640873 is about 138.2236972634.

The spelling of 2640873 in words is "two million, six hundred forty thousand, eight hundred seventy-three".