197900 has 18 divisors (see below), whose sum is σ = 429660. Its totient is φ = 79120.

The previous prime is 197893. The next prime is 197909. The reversal of 197900 is 9791.

It is a self number, because there is not a number n which added to its sum of digits gives 197900.

It is not an unprimeable number, because it can be changed into a prime (197909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 890 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (23870).

2¹⁹⁷⁹⁰⁰ is an apocalyptic number.

197900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197900 is an abundant number, since it is smaller than the sum of its proper divisors (231760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197900 is a wasteful number, since it uses less digits than its factorization.

197900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 197900 is about 444.8595283907. The cubic root of 197900 is about 58.2749529298.

The spelling of 197900 in words is "one hundred ninety-seven thousand, nine hundred".