66923 has 2 divisors, whose sum is σ = 66924.
Its totient is φ = 66922.
The previous prime is 66919. The next prime is 66931. The reversal of 66923 is 32966.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 66923 - 22 = 66919 is a prime.
It is equal to p6668 and since 66923 and 6668 have the same sum of digits, it is a Honaker prime.
It is a plaindrome in base 6 and base 13.
It is a junction number, because it is equal to n+sod(n) for n = 66892 and 66901.
It is not a weakly prime, because it can be changed into another prime (66943) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33461 + 33462.
It is an arithmetic number, because the mean of its divisors is an integer number (33462).
266923 is an apocalyptic number.
66923 is a deficient number, since it is larger than the sum of its proper divisors (1).
66923 is an equidigital number, since it uses as much as digits as its factorization.
66923 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1944, while the sum is 26.
The square root of 66923 is about 258.6948008755.
The cubic root of 66923 is about 40.5999158758.
It can be divided in two parts, 66 and 923, that added together give a palindrome (989).
The spelling of 66923 in words is "sixty-six thousand, nine hundred twenty-three".