2644889 has 8 divisors (see below), whose sum is σ = 2940672. Its totient is φ = 2362320.

The previous prime is 2644883. The next prime is 2644891. The reversal of 2644889 is 9884462.

2644889 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 a cyclic number.

It is not a de Polignac number, because 2644889 - 2²⁰ = 1596313 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 6⁵ + 4³ + 4⁴ + 8 + 8⁷ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2644883) 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, 2879 + ... + 3684.

It is an arithmetic number, because the mean of its divisors is an integer number (367584).

2^2644889 is an apocalyptic number.

It is an amenable number.

2644889 is a deficient number, since it is larger than the sum of its proper divisors (295783).

2644889 is a wasteful number, since it uses less digits than its factorization.

2644889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6607.

The product of its digits is 110592, while the sum is 41.

The square root of 2644889 is about 1626.3114707829. The cubic root of 2644889 is about 138.2937277951.

The spelling of 2644889 in words is "two million, six hundred forty-four thousand, eight hundred eighty-nine".