66493 has 12 divisors (see below), whose sum is σ = 82080. Its totient is φ = 53592.

The previous prime is 66491. The next prime is 66499. The reversal of 66493 is 39466.

It is not a de Polignac number, because 66493 - 2¹ = 66491 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 (66491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098 + ... + 1156.

It is an arithmetic number, because the mean of its divisors is an integer number (6840).

2⁶⁶⁴⁹³ is an apocalyptic number.

It is an amenable number.

66493 is a deficient number, since it is larger than the sum of its proper divisors (15587).

66493 is a wasteful number, since it uses less digits than its factorization.

66493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 89 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 66493 is about 257.8623663895. The cubic root of 66493 is about 40.5127734946.

It can be divided in two parts, 664 and 93, that added together give a palindrome (757).

The spelling of 66493 in words is "sixty-six thousand, four hundred ninety-three".