197804 has 6 divisors (see below), whose sum is σ = 346164. Its totient is φ = 98900.

The previous prime is 197803. The next prime is 197807. The reversal of 197804 is 408791.

It is not an unprimeable number, because it can be changed into a prime (197803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24722 + ... + 24729.

It is an arithmetic number, because the mean of its divisors is an integer number (57694).

2¹⁹⁷⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

197804 is a deficient number, since it is larger than the sum of its proper divisors (148360).

197804 is a wasteful number, since it uses less digits than its factorization.

197804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49455 (or 49453 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 197804 is about 444.7516160735. The cubic root of 197804 is about 58.2655284725.

It can be divided in two parts, 197 and 804, that added together give a palindrome (1001).

The spelling of 197804 in words is "one hundred ninety-seven thousand, eight hundred four".