208197 has 16 divisors (see below), whose sum is σ = 336960. Its totient is φ = 126000.

The previous prime is 208189. The next prime is 208207. The reversal of 208197 is 791802.

208197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208197 - 2³ = 208189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 208197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2²⁰⁸¹⁹⁷ is an apocalyptic number.

208197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

208197 is a deficient number, since it is larger than the sum of its proper divisors (128763).

208197 is a wasteful number, since it uses less digits than its factorization.

208197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 208197 is about 456.2860944627. The cubic root of 208197 is about 59.2686209699.

Adding to 208197 its reverse (791802), we get a palindrome (999999).

The spelling of 208197 in words is "two hundred eight thousand, one hundred ninety-seven".