2198815 has 4 divisors (see below), whose sum is σ = 2638584. Its totient is φ = 1759048.

The previous prime is 2198783. The next prime is 2198827. The reversal of 2198815 is 5188912.

2198815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2198815 - 2⁵ = 2198783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 219877 + ... + 219886.

It is an arithmetic number, because the mean of its divisors is an integer number (659646).

2^2198815 is an apocalyptic number.

2198815 is a deficient number, since it is larger than the sum of its proper divisors (439769).

2198815 is an equidigital number, since it uses as much as digits as its factorization.

2198815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439768.

The product of its digits is 5760, while the sum is 34.

The square root of 2198815 is about 1482.8401801948. The cubic root of 2198815 is about 130.0357889630.

The spelling of 2198815 in words is "two million, one hundred ninety-eight thousand, eight hundred fifteen".