2659998 has 32 divisors (see below), whose sum is σ = 5951232. Its totient is φ = 785600.

The previous prime is 2659963. The next prime is 2659999. The reversal of 2659998 is 8999562.

2659998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2659999) 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 15 ways as a sum of consecutive naturals, for example, 2215 + ... + 3197.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

2^2659998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2659998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2975616).

2659998 is an abundant number, since it is smaller than the sum of its proper divisors (3291234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2659998 is a wasteful number, since it uses less digits than its factorization.

2659998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 349920, while the sum is 48.

The square root of 2659998 is about 1630.9500298906. The cubic root of 2659998 is about 138.5565634976.

The spelling of 2659998 in words is "two million, six hundred fifty-nine thousand, nine hundred ninety-eight".