66339249 has 8 divisors (see below), whose sum is σ = 89235552. Its totient is φ = 43834560.

The previous prime is 66339233. The next prime is 66339281. The reversal of 66339249 is 94293366.

66339249 is digitally balanced in base 2, 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 not a de Polignac number, because 66339249 - 2⁴ = 66339233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66339249.

It is not an unprimeable number, because it can be changed into a prime (66339209) 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 7 ways as a sum of consecutive naturals, for example, 97507 + ... + 98184.

It is an arithmetic number, because the mean of its divisors is an integer number (11154444).

Almost surely, 2^66339249 is an apocalyptic number.

It is an amenable number.

66339249 is a deficient number, since it is larger than the sum of its proper divisors (22896303).

66339249 is a wasteful number, since it uses less digits than its factorization.

66339249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195807.

The product of its digits is 209952, while the sum is 42.

The square root of 66339249 is about 8144.8909753293. The cubic root of 66339249 is about 404.8152365579.

The spelling of 66339249 in words is "sixty-six million, three hundred thirty-nine thousand, two hundred forty-nine".