2678889 has 8 divisors (see below), whose sum is σ = 3579840. Its totient is φ = 1781936.

The previous prime is 2678887. The next prime is 2678903. The reversal of 2678889 is 9888762.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2678889 - 2¹ = 2678887 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (447480).

2^2678889 is an apocalyptic number.

It is an amenable number.

2678889 is a deficient number, since it is larger than the sum of its proper divisors (900951).

2678889 is a wasteful number, since it uses less digits than its factorization.

2678889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its digits is 387072, while the sum is 48.

The square root of 2678889 is about 1636.7311935684. The cubic root of 2678889 is about 138.8837943257.

The spelling of 2678889 in words is "two million, six hundred seventy-eight thousand, eight hundred eighty-nine".