66798338 has 32 divisors (see below), whose sum is σ = 113840640. Its totient is φ = 29203200.

The previous prime is 66798337. The next prime is 66798343. The reversal of 66798338 is 83389766.

66798338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66798331) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 33263 + ... + 35213.

It is an arithmetic number, because the mean of its divisors is an integer number (3557520).

Almost surely, 2^66798338 is an apocalyptic number.

66798338 is a deficient number, since it is larger than the sum of its proper divisors (47042302).

66798338 is a wasteful number, since it uses less digits than its factorization.

66798338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042.

The product of its digits is 1306368, while the sum is 50.

The square root of 66798338 is about 8173.0250213737. The cubic root of 66798338 is about 405.7469080309.

The spelling of 66798338 in words is "sixty-six million, seven hundred ninety-eight thousand, three hundred thirty-eight".