66693 has 16 divisors (see below), whose sum is σ = 101376. Its totient is φ = 38640.

The previous prime is 66683. The next prime is 66697. The reversal of 66693 is 39666.

It is not a de Polignac number, because 66693 - 2⁶ = 66629 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (6336).

2⁶⁶⁶⁹³ is an apocalyptic number.

It is an amenable number.

66693 is a deficient number, since it is larger than the sum of its proper divisors (34683).

66693 is a wasteful number, since it uses less digits than its factorization.

66693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104.

The product of its digits is 5832, while the sum is 30.

The square root of 66693 is about 258.2498789932. The cubic root of 66693 is about 40.5533514228.

The spelling of 66693 in words is "sixty-six thousand, six hundred ninety-three".