197995998 has 32 divisors (see below), whose sum is σ = 419040000. Its totient is φ = 62194176.

The previous prime is 197995961. The next prime is 197996003. The reversal of 197995998 is 899599791.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17503 + ... + 26501.

It is an arithmetic number, because the mean of its divisors is an integer number (13095000).

Almost surely, 2^197995998 is an apocalyptic number.

197995998 is an abundant number, since it is smaller than the sum of its proper divisors (221044002).

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

197995998 is a wasteful number, since it uses less digits than its factorization.

197995998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9216.

The product of its digits is 16533720, while the sum is 66.

The square root of 197995998 is about 14071.1050738739. The cubic root of 197995998 is about 582.8437414361.

The spelling of 197995998 in words is "one hundred ninety-seven million, nine hundred ninety-five thousand, nine hundred ninety-eight".