166598227 has 2 divisors, whose sum is σ = 166598228. Its totient is φ = 166598226.

The previous prime is 166598209. The next prime is 166598233. The reversal of 166598227 is 722895661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166598227 - 2¹⁵ = 166565459 is a prime.

It is not a weakly prime, because it can be changed into another prime (166598207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83299113 + 83299114.

It is an arithmetic number, because the mean of its divisors is an integer number (83299114).

Almost surely, 2^166598227 is an apocalyptic number.

166598227 is a deficient number, since it is larger than the sum of its proper divisors (1).

166598227 is an equidigital number, since it uses as much as digits as its factorization.

166598227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 166598227 is about 12907.2935582949. The cubic root of 166598227 is about 550.2458702359.

The spelling of 166598227 in words is "one hundred sixty-six million, five hundred ninety-eight thousand, two hundred twenty-seven".