16664833 has 2 divisors, whose sum is σ = 16664834. Its totient is φ = 16664832.

The previous prime is 16664831. The next prime is 16664861. The reversal of 16664833 is 33846661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15618304 + 1046529 = 3952^2 + 1023^2 .

It is a cyclic number.

It is not a de Polignac number, because 16664833 - 2¹ = 16664831 is a prime.

Together with 16664831, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16664792 and 16664801.

It is not a weakly prime, because it can be changed into another prime (16664831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8332416 + 8332417.

It is an arithmetic number, because the mean of its divisors is an integer number (8332417).

Almost surely, 2^16664833 is an apocalyptic number.

It is an amenable number.

16664833 is a deficient number, since it is larger than the sum of its proper divisors (1).

16664833 is an equidigital number, since it uses as much as digits as its factorization.

16664833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 16664833 is about 4082.2583210767. The cubic root of 16664833 is about 255.4271094139.

The spelling of 16664833 in words is "sixteen million, six hundred sixty-four thousand, eight hundred thirty-three".