6198809 has 2 divisors, whose sum is σ = 6198810. Its totient is φ = 6198808.

The previous prime is 6198793. The next prime is 6198817. The reversal of 6198809 is 9088916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4853209 + 1345600 = 2203^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 6198809 - 2⁴ = 6198793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6198859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3099404 + 3099405.

It is an arithmetic number, because the mean of its divisors is an integer number (3099405).

Almost surely, 2^6198809 is an apocalyptic number.

It is an amenable number.

6198809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6198809 is an equidigital number, since it uses as much as digits as its factorization.

6198809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 6198809 is about 2489.7407495561. The cubic root of 6198809 is about 183.6972909425.

It can be divided in two parts, 6198 and 809, that added together give a palindrome (7007).

The spelling of 6198809 in words is "six million, one hundred ninety-eight thousand, eight hundred nine".