66907683 has 12 divisors (see below), whose sum is σ = 101731240. Its totient is φ = 42257376.

The previous prime is 66907657. The next prime is 66907691. The reversal of 66907683 is 38670966.

It is not a de Polignac number, because 66907683 - 2⁵ = 66907651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66907583) 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 11 ways as a sum of consecutive naturals, for example, 195466 + ... + 195807.

Almost surely, 2^66907683 is an apocalyptic number.

66907683 is a deficient number, since it is larger than the sum of its proper divisors (34823557).

66907683 is a wasteful number, since it uses less digits than its factorization.

66907683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391298 (or 391295 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 66907683 is about 8179.7116697351. The cubic root of 66907683 is about 405.9681820455.

The spelling of 66907683 in words is "sixty-six million, nine hundred seven thousand, six hundred eighty-three".