660168227 has 2 divisors, whose sum is σ = 660168228. Its totient is φ = 660168226.

The previous prime is 660168221. The next prime is 660168239. The reversal of 660168227 is 722861066.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660168227 - 2⁴ = 660168211 is a prime.

It is not a weakly prime, because it can be changed into another prime (660168221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330084113 + 330084114.

It is an arithmetic number, because the mean of its divisors is an integer number (330084114).

Almost surely, 2^660168227 is an apocalyptic number.

660168227 is a deficient number, since it is larger than the sum of its proper divisors (1).

660168227 is an equidigital number, since it uses as much as digits as its factorization.

660168227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 660168227 is about 25693.7390622696. The cubic root of 660168227 is about 870.7327367285.

The spelling of 660168227 in words is "six hundred sixty million, one hundred sixty-eight thousand, two hundred twenty-seven".