206198137 has 8 divisors (see below), whose sum is σ = 211161600. Its totient is φ = 201293664.

The previous prime is 206198123. The next prime is 206198141. The reversal of 206198137 is 731891602.

206198137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206198137 - 2⁷ = 206198009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206198096 and 206198105.

It is not an unprimeable number, because it can be changed into a prime (206198107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7633 + ... + 21694.

It is an arithmetic number, because the mean of its divisors is an integer number (26395200).

Almost surely, 2^206198137 is an apocalyptic number.

It is an amenable number.

206198137 is a deficient number, since it is larger than the sum of its proper divisors (4963463).

206198137 is an equidigital number, since it uses as much as digits as its factorization.

206198137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29495.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 206198137 is about 14359.6008649266. The cubic root of 206198137 is about 590.7833480674.

The spelling of 206198137 in words is "two hundred six million, one hundred ninety-eight thousand, one hundred thirty-seven".