199998607 has 2 divisors, whose sum is σ = 199998608. Its totient is φ = 199998606.

The previous prime is 199998581. The next prime is 199998637. The reversal of 199998607 is 706899991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199998607 - 2⁷ = 199998479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199998637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99999303 + 99999304.

It is an arithmetic number, because the mean of its divisors is an integer number (99999304).

Almost surely, 2^199998607 is an apocalyptic number.

199998607 is a deficient number, since it is larger than the sum of its proper divisors (1).

199998607 is an equidigital number, since it uses as much as digits as its factorization.

199998607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The square root of 199998607 is about 14142.0863736579. The cubic root of 199998607 is about 584.8021899205.

The spelling of 199998607 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, six hundred seven".