166356233 has 2 divisors, whose sum is σ = 166356234. Its totient is φ = 166356232.

The previous prime is 166356163. The next prime is 166356299. The reversal of 166356233 is 332653661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 77299264 = 9437^2 + 8792^2 .

It is a cyclic number.

It is not a de Polignac number, because 166356233 - 2¹⁰ = 166355209 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166356193 and 166356202.

It is not a weakly prime, because it can be changed into another prime (166356133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83178116 + 83178117.

It is an arithmetic number, because the mean of its divisors is an integer number (83178117).

Almost surely, 2^166356233 is an apocalyptic number.

It is an amenable number.

166356233 is a deficient number, since it is larger than the sum of its proper divisors (1).

166356233 is an equidigital number, since it uses as much as digits as its factorization.

166356233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 35.

The square root of 166356233 is about 12897.9158393905. The cubic root of 166356233 is about 549.9793193326.

The spelling of 166356233 in words is "one hundred sixty-six million, three hundred fifty-six thousand, two hundred thirty-three".