66043 has 4 divisors (see below), whose sum is σ = 66568. Its totient is φ = 65520.

The previous prime is 66041. The next prime is 66047. The reversal of 66043 is 34066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34066 = 2 ⋅17033.

It is a cyclic number.

It is not a de Polignac number, because 66043 - 2¹ = 66041 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 66043.

It is not an unprimeable number, because it can be changed into a prime (66041) 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, 55 + ... + 367.

It is an arithmetic number, because the mean of its divisors is an integer number (16642).

2⁶⁶⁰⁴³ is an apocalyptic number.

66043 is a deficient number, since it is larger than the sum of its proper divisors (525).

66043 is a wasteful number, since it uses less digits than its factorization.

66043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 66043 is about 256.9883265831. The cubic root of 66043 is about 40.4211747313.

It can be divided in two parts, 660 and 43, that added together give a triangular number (703 = T₃₇).

The spelling of 66043 in words is "sixty-six thousand, forty-three".