2198647 has 4 divisors (see below), whose sum is σ = 2398536. Its totient is φ = 1998760.

The previous prime is 2198617. The next prime is 2198653. The reversal of 2198647 is 7468912.

2198647 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 2198647 - 2¹¹ = 2196599 is a prime.

It is a Duffinian number.

2198647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198617) 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 3 ways as a sum of consecutive naturals, for example, 99928 + ... + 99949.

It is an arithmetic number, because the mean of its divisors is an integer number (599634).

2^2198647 is an apocalyptic number.

2198647 is a deficient number, since it is larger than the sum of its proper divisors (199889).

2198647 is a wasteful number, since it uses less digits than its factorization.

2198647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199888.

The product of its digits is 24192, while the sum is 37.

The square root of 2198647 is about 1482.7835310658. The cubic root of 2198647 is about 130.0324770929.

The spelling of 2198647 in words is "two million, one hundred ninety-eight thousand, six hundred forty-seven".