2198897 has 2 divisors, whose sum is σ = 2198898. Its totient is φ = 2198896.

The previous prime is 2198887. The next prime is 2198909. The reversal of 2198897 is 7988912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 78961 = 1456^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198897 - 2⁴ = 2198881 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099448 + 1099449.

It is an arithmetic number, because the mean of its divisors is an integer number (1099449).

2^2198897 is an apocalyptic number.

It is an amenable number.

2198897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198897 is an equidigital number, since it uses as much as digits as its factorization.

2198897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 44.

The square root of 2198897 is about 1482.8678295789. The cubic root of 2198897 is about 130.0374054097.

The spelling of 2198897 in words is "two million, one hundred ninety-eight thousand, eight hundred ninety-seven".