2638559 has 8 divisors (see below), whose sum is σ = 3289728. Its totient is φ = 2055960.

The previous prime is 2638543. The next prime is 2638561. The reversal of 2638559 is 9558362.

2638559 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 2638559 - 2⁴ = 2638543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638529) 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, 17057 + ... + 17210.

It is an arithmetic number, because the mean of its divisors is an integer number (411216).

2^2638559 is an apocalyptic number.

2638559 is a deficient number, since it is larger than the sum of its proper divisors (651169).

2638559 is a wasteful number, since it uses less digits than its factorization.

2638559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34285.

The product of its digits is 64800, while the sum is 38.

The square root of 2638559 is about 1624.3641833037. The cubic root of 2638559 is about 138.1833137613.

The spelling of 2638559 in words is "two million, six hundred thirty-eight thousand, five hundred fifty-nine".