66407433 has 8 divisors (see below), whose sum is σ = 88682688. Its totient is φ = 44201904.

The previous prime is 66407431. The next prime is 66407447. The reversal of 66407433 is 33470466.

66407433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 66407433 - 2¹ = 66407431 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 66407394 and 66407403.

It is not an unprimeable number, because it can be changed into a prime (66407431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15166 + ... + 19047.

It is an arithmetic number, because the mean of its divisors is an integer number (11085336).

Almost surely, 2^66407433 is an apocalyptic number.

It is an amenable number.

66407433 is a deficient number, since it is larger than the sum of its proper divisors (22275255).

66407433 is a wasteful number, since it uses less digits than its factorization.

66407433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34863.

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 66407433 is about 8149.0755917466. The cubic root of 66407433 is about 404.9538798267.

Adding to 66407433 its reverse (33470466), we get a palindrome (99877899).

The spelling of 66407433 in words is "sixty-six million, four hundred seven thousand, four hundred thirty-three".