66305433 has 8 divisors (see below), whose sum is σ = 88445728. Its totient is φ = 44184384.

The previous prime is 66305431. The next prime is 66305467. The reversal of 66305433 is 33450366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66305433 - 2¹ = 66305431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66305433.

It is not an unprimeable number, because it can be changed into a prime (66305431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8466 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (11055716).

Almost surely, 2^66305433 is an apocalyptic number.

It is an amenable number.

66305433 is a deficient number, since it is larger than the sum of its proper divisors (22140295).

66305433 is a wasteful number, since it uses less digits than its factorization.

66305433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9623.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 66305433 is about 8142.8148081606. The cubic root of 66305433 is about 404.7464408906.

Adding to 66305433 its reverse (33450366), we get a palindrome (99755799).

The spelling of 66305433 in words is "sixty-six million, three hundred five thousand, four hundred thirty-three".