166631333 has 8 divisors (see below), whose sum is σ = 184270656. Its totient is φ = 149407200.

The previous prime is 166631327. The next prime is 166631359. The reversal of 166631333 is 333136661.

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 166631333 - 2⁴ = 166631317 is a prime.

It is a super-2 number, since 2×166631333² = 55532002274713778, which contains 22 as substring.

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 166631333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166631323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102953 + ... + 104558.

It is an arithmetic number, because the mean of its divisors is an integer number (23033832).

Almost surely, 2^166631333 is an apocalyptic number.

It is an amenable number.

166631333 is a deficient number, since it is larger than the sum of its proper divisors (17639323).

166631333 is a wasteful number, since it uses less digits than its factorization.

166631333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207595.

The product of its digits is 17496, while the sum is 32.

The square root of 166631333 is about 12908.5759477953. The cubic root of 166631333 is about 550.2823156683.

Adding to 166631333 its reverse (333136661), we get a palindrome (499767994).

The spelling of 166631333 in words is "one hundred sixty-six million, six hundred thirty-one thousand, three hundred thirty-three".