666666433 has 8 divisors (see below), whose sum is σ = 702696320. Its totient is φ = 630730800.

The previous prime is 666666421. The next prime is 666666457. The reversal of 666666433 is 334666666.

666666433 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 a cyclic number.

It is not a de Polignac number, because 666666433 - 2⁹ = 666665921 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (666661433) 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, 8793 + ... + 37558.

It is an arithmetic number, because the mean of its divisors is an integer number (87837040).

Almost surely, 2^666666433 is an apocalyptic number.

It is an amenable number.

666666433 is a deficient number, since it is larger than the sum of its proper divisors (36029887).

666666433 is a wasteful number, since it uses less digits than its factorization.

666666433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47127.

The product of its digits is 1679616, while the sum is 46.

The square root of 666666433 is about 25819.8844497802. The cubic root of 666666433 is about 873.5803626730.

It can be divided in two parts, 6666664 and 33, that multiplied together give a palindrome (219999912).

The spelling of 666666433 in words is "six hundred sixty-six million, six hundred sixty-six thousand, four hundred thirty-three".