198412597 has 2 divisors, whose sum is σ = 198412598. Its totient is φ = 198412596.

The previous prime is 198412589. The next prime is 198412601. The reversal of 198412597 is 795214891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188210961 + 10201636 = 13719^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 198412597 - 2³ = 198412589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198412507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99206298 + 99206299.

It is an arithmetic number, because the mean of its divisors is an integer number (99206299).

Almost surely, 2^198412597 is an apocalyptic number.

It is an amenable number.

198412597 is a deficient number, since it is larger than the sum of its proper divisors (1).

198412597 is an equidigital number, since it uses as much as digits as its factorization.

198412597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The square root of 198412597 is about 14085.9006456811. The cubic root of 198412597 is about 583.2522379420.

The spelling of 198412597 in words is "one hundred ninety-eight million, four hundred twelve thousand, five hundred ninety-seven".