197773998 has 8 divisors (see below), whose sum is σ = 395548008. Its totient is φ = 65924664.

The previous prime is 197773993. The next prime is 197774023. The reversal of 197773998 is 899377791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

197773998 is an admirable number.

It is a super-2 number, since 2×197773998² = 78229108569808008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197773993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16481161 + ... + 16481172.

It is an arithmetic number, because the mean of its divisors is an integer number (49443501).

Almost surely, 2^197773998 is an apocalyptic number.

197773998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

197773998 is a wasteful number, since it uses less digits than its factorization.

197773998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32962338.

The product of its digits is 6001128, while the sum is 60.

The square root of 197773998 is about 14063.2143551892. The cubic root of 197773998 is about 582.6258250785.

The spelling of 197773998 in words is "one hundred ninety-seven million, seven hundred seventy-three thousand, nine hundred ninety-eight".