197916 has 12 divisors (see below), whose sum is σ = 461832. Its totient is φ = 65968.

The previous prime is 197909. The next prime is 197921. The reversal of 197916 is 619791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8235 + ... + 8258.

It is an arithmetic number, because the mean of its divisors is an integer number (38486).

2¹⁹⁷⁹¹⁶ is an apocalyptic number.

It is an amenable number.

197916 is an abundant number, since it is smaller than the sum of its proper divisors (263916).

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

197916 is a wasteful number, since it uses less digits than its factorization.

197916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500 (or 16498 counting only the distinct ones).

The product of its digits is 3402, while the sum is 33.

The square root of 197916 is about 444.8775112320. The cubic root of 197916 is about 58.2765233764.

Subtracting 197916 from its reverse (619791), we obtain a cube (421875 = 75³).

The spelling of 197916 in words is "one hundred ninety-seven thousand, nine hundred sixteen".