2678843 has 4 divisors (see below), whose sum is σ = 2836440. Its totient is φ = 2521248.

The previous prime is 2678839. The next prime is 2678873. The reversal of 2678843 is 3488762.

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

It is a cyclic number.

It is not a de Polignac number, because 2678843 - 2² = 2678839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2678797 and 2678806.

It is not an unprimeable number, because it can be changed into a prime (2678873) 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, 78773 + ... + 78806.

It is an arithmetic number, because the mean of its divisors is an integer number (709110).

2^2678843 is an apocalyptic number.

2678843 is a deficient number, since it is larger than the sum of its proper divisors (157597).

2678843 is a wasteful number, since it uses less digits than its factorization.

2678843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157596.

The product of its digits is 64512, while the sum is 38.

The square root of 2678843 is about 1636.7171411090. The cubic root of 2678843 is about 138.8829993829.

The spelling of 2678843 in words is "two million, six hundred seventy-eight thousand, eight hundred forty-three".