197266866 has 8 divisors (see below), whose sum is σ = 394533744. Its totient is φ = 65755620.

The previous prime is 197266813. The next prime is 197266877. The reversal of 197266866 is 668662791.

197266866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

197266866 is an admirable number.

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, 16438900 + ... + 16438911.

It is an arithmetic number, because the mean of its divisors is an integer number (49316718).

Almost surely, 2^197266866 is an apocalyptic number.

197266866 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.

197266866 is a wasteful number, since it uses less digits than its factorization.

197266866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32877816.

The product of its digits is 1306368, while the sum is 51.

The square root of 197266866 is about 14045.1723378533. The cubic root of 197266866 is about 582.1274091935.

The spelling of 197266866 in words is "one hundred ninety-seven million, two hundred sixty-six thousand, eight hundred sixty-six".