66831233 has 8 divisors (see below), whose sum is σ = 80871552. Its totient is φ = 53914176.

The previous prime is 66831211. The next prime is 66831277. The reversal of 66831233 is 33213866.

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 66831233 - 2¹⁰ = 66830209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66831233.

It is not an unprimeable number, because it can be changed into a prime (66831293) 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, 280685 + ... + 280922.

It is an arithmetic number, because the mean of its divisors is an integer number (10108944).

Almost surely, 2^66831233 is an apocalyptic number.

It is an amenable number.

66831233 is a deficient number, since it is larger than the sum of its proper divisors (14040319).

66831233 is a wasteful number, since it uses less digits than its factorization.

66831233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561631.

The product of its digits is 15552, while the sum is 32.

The square root of 66831233 is about 8175.0371864598. The cubic root of 66831233 is about 405.8135007766.

The spelling of 66831233 in words is "sixty-six million, eight hundred thirty-one thousand, two hundred thirty-three".