666967833 has 12 divisors (see below), whose sum is σ = 1101026368. Its totient is φ = 381124440.

The previous prime is 666967799. The next prime is 666967841. The reversal of 666967833 is 338769666.

It is a happy number.

666967833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 666967833 - 2⁹ = 666967321 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 666967833.

It is not an unprimeable number, because it can be changed into a prime (666967633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5293333 + ... + 5293458.

Almost surely, 2^666967833 is an apocalyptic number.

666967833 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

666967833 is a deficient number, since it is larger than the sum of its proper divisors (434058535).

666967833 is a wasteful number, since it uses less digits than its factorization.

666967833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10586804 (or 10586801 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 666967833 is about 25825.7203771744. The cubic root of 666967833 is about 873.7119914453.

It can be divided in two parts, 66696 and 7833, that added together give a square (74529 = 273²).

The spelling of 666967833 in words is "six hundred sixty-six million, nine hundred sixty-seven thousand, eight hundred thirty-three".