66600239 has 8 divisors (see below), whose sum is σ = 67599360. Its totient is φ = 65605176.

The previous prime is 66600229. The next prime is 66600241. The reversal of 66600239 is 93200666.

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

It is a cyclic number.

It is not a de Polignac number, because 66600239 - 2⁴ = 66600223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66600229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50462 + ... + 51764.

It is an arithmetic number, because the mean of its divisors is an integer number (8449920).

Almost surely, 2^66600239 is an apocalyptic number.

66600239 is a deficient number, since it is larger than the sum of its proper divisors (999121).

66600239 is a wasteful number, since it uses less digits than its factorization.

66600239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 66600239 is about 8160.8969482527. The cubic root of 66600239 is about 405.3454127870.

The spelling of 66600239 in words is "sixty-six million, six hundred thousand, two hundred thirty-nine".