2198743 has 4 divisors (see below), whose sum is σ = 2219400. Its totient is φ = 2178088.

The previous prime is 2198723. The next prime is 2198747. The reversal of 2198743 is 3478912.

2198743 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 a de Polignac number, because none of the positive numbers 2^k-2198743 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2198699 and 2198708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198747) 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, 10168 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (554850).

2^2198743 is an apocalyptic number.

2198743 is a deficient number, since it is larger than the sum of its proper divisors (20657).

2198743 is a wasteful number, since it uses less digits than its factorization.

2198743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20656.

The product of its digits is 12096, while the sum is 34.

The square root of 2198743 is about 1482.8159022616. The cubic root of 2198743 is about 130.0343696107.

The spelling of 2198743 in words is "two million, one hundred ninety-eight thousand, seven hundred forty-three".