66433 has 4 divisors (see below), whose sum is σ = 68608. Its totient is φ = 64260.

The previous prime is 66431. The next prime is 66449. The reversal of 66433 is 33466.

66433 is nontrivially palindromic in base 2 and base 6.

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.

It is a cyclic number.

It is not a de Polignac number, because 66433 - 2¹ = 66431 is a prime.

It is a Duffinian number.

66433 is a lucky number.

It is a plaindrome in base 9.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (66431) 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 3 ways as a sum of consecutive naturals, for example, 1041 + ... + 1102.

It is an arithmetic number, because the mean of its divisors is an integer number (17152).

2⁶⁶⁴³³ is an apocalyptic number.

It is an amenable number.

66433 is a deficient number, since it is larger than the sum of its proper divisors (2175).

66433 is a wasteful number, since it uses less digits than its factorization.

66433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its digits is 1296, while the sum is 22.

The square root of 66433 is about 257.7459989990. The cubic root of 66433 is about 40.5005842521.

Adding to 66433 its reverse (33466), we get a palindrome (99899).

It can be divided in two parts, 664 and 33, that multiplied together give a palindrome (21912).

The spelling of 66433 in words is "sixty-six thousand, four hundred thirty-three".