66323 has 4 divisors (see below), whose sum is σ = 68640. Its totient is φ = 64008.

The previous prime is 66301. The next prime is 66337. The reversal of 66323 is 32366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32366 = 2 ⋅16183.

It is a cyclic number.

It is not a de Polignac number, because 66323 - 2⁸ = 66067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66295 and 66304.

It is not an unprimeable number, because it can be changed into a prime (66343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115 + ... + 1172.

It is an arithmetic number, because the mean of its divisors is an integer number (17160).

2⁶⁶³²³ is an apocalyptic number.

66323 is a deficient number, since it is larger than the sum of its proper divisors (2317).

66323 is a wasteful number, since it uses less digits than its factorization.

66323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its digits is 648, while the sum is 20.

The square root of 66323 is about 257.5325222181. The cubic root of 66323 is about 40.4782182320.

Adding to 66323 its reverse (32366), we get a palindrome (98689).

It can be divided in two parts, 663 and 23, that added together give a palindrome (686).

The spelling of 66323 in words is "sixty-six thousand, three hundred twenty-three".