66893 has 4 divisors (see below), whose sum is σ = 67488. Its totient is φ = 66300.

The previous prime is 66889. The next prime is 66919. The reversal of 66893 is 39866.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66893 - 2² = 66889 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 (66853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 372.

It is an arithmetic number, because the mean of its divisors is an integer number (16872).

2⁶⁶⁸⁹³ is an apocalyptic number.

It is an amenable number.

66893 is a deficient number, since it is larger than the sum of its proper divisors (595).

66893 is a wasteful number, since it uses less digits than its factorization.

66893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its digits is 7776, while the sum is 32.

The square root of 66893 is about 258.6368109918. The cubic root of 66893 is about 40.5938483080.

It can be divided in two parts, 66 and 893, that added together give a palindrome (959).

The spelling of 66893 in words is "sixty-six thousand, eight hundred ninety-three".