2198747 has 2 divisors, whose sum is σ = 2198748. Its totient is φ = 2198746.

The previous prime is 2198723. The next prime is 2198759. The reversal of 2198747 is 7478912.

2198747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198747 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2198747.

It is not a weakly prime, because it can be changed into another prime (2198767) 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 as a sum of consecutive naturals, namely, 1099373 + 1099374.

It is an arithmetic number, because the mean of its divisors is an integer number (1099374).

2^2198747 is an apocalyptic number.

2198747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198747 is an equidigital number, since it uses as much as digits as its factorization.

2198747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 2198747 is about 1482.8172510461. The cubic root of 2198747 is about 130.0344484644.

The spelling of 2198747 in words is "two million, one hundred ninety-eight thousand, seven hundred forty-seven".