266813198 has 8 divisors (see below), whose sum is σ = 423762192. Its totient is φ = 125559136.

The previous prime is 266813161. The next prime is 266813203. The reversal of 266813198 is 891318662.

266813198 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.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3923690 + ... + 3923757.

It is an arithmetic number, because the mean of its divisors is an integer number (52970274).

Almost surely, 2^266813198 is an apocalyptic number.

266813198 is a deficient number, since it is larger than the sum of its proper divisors (156948994).

266813198 is a wasteful number, since it uses less digits than its factorization.

266813198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7847466.

The product of its digits is 124416, while the sum is 44.

The square root of 266813198 is about 16334.4175898622. The cubic root of 266813198 is about 643.7774635218. Note that the first 3 decimals are identical.

The spelling of 266813198 in words is "two hundred sixty-six million, eight hundred thirteen thousand, one hundred ninety-eight".