197712066 has 8 divisors (see below), whose sum is σ = 395424144. Its totient is φ = 65904020.

The previous prime is 197712037. The next prime is 197712089. The reversal of 197712066 is 660217791.

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

197712066 is an admirable number.

It is a super-2 number, since 2×197712066² = 78180122083976712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16476000 + ... + 16476011.

It is an arithmetic number, because the mean of its divisors is an integer number (49428018).

Almost surely, 2^197712066 is an apocalyptic number.

197712066 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.

197712066 is a wasteful number, since it uses less digits than its factorization.

197712066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32952016.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 197712066 is about 14061.0122679699. The cubic root of 197712066 is about 582.5650032145.

The spelling of 197712066 in words is "one hundred ninety-seven million, seven hundred twelve thousand, sixty-six".