166608223 has 2 divisors, whose sum is σ = 166608224. Its totient is φ = 166608222.

The previous prime is 166608209. The next prime is 166608257. The reversal of 166608223 is 322806661.

It is a happy number.

It is an a-pointer prime, because the next prime (166608257) can be obtained adding 166608223 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166608223 is a prime.

It is equal to p_9323872 and since 166608223 and 9323872 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166608293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83304111 + 83304112.

It is an arithmetic number, because the mean of its divisors is an integer number (83304112).

Almost surely, 2^166608223 is an apocalyptic number.

166608223 is a deficient number, since it is larger than the sum of its proper divisors (1).

166608223 is an equidigital number, since it uses as much as digits as its factorization.

166608223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 166608223 is about 12907.6807754143. The cubic root of 166608223 is about 550.2568750503.

The spelling of 166608223 in words is "one hundred sixty-six million, six hundred eight thousand, two hundred twenty-three".