2678243 has 4 divisors (see below), whose sum is σ = 2743608. Its totient is φ = 2612880.

The previous prime is 2678227. The next prime is 2678251. The reversal of 2678243 is 3428762.

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 2678243 - 2⁴ = 2678227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2678743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32621 + ... + 32702.

It is an arithmetic number, because the mean of its divisors is an integer number (685902).

2^2678243 is an apocalyptic number.

2678243 is a deficient number, since it is larger than the sum of its proper divisors (65365).

2678243 is an equidigital number, since it uses as much as digits as its factorization.

2678243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65364.

The product of its digits is 16128, while the sum is 32.

The square root of 2678243 is about 1636.5338371082. The cubic root of 2678243 is about 138.8726297293.

The spelling of 2678243 in words is "two million, six hundred seventy-eight thousand, two hundred forty-three".