160666663 has 2 divisors, whose sum is σ = 160666664. Its totient is φ = 160666662.

The previous prime is 160666637. The next prime is 160666697. The reversal of 160666663 is 366666061.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160666663 - 2⁹ = 160666151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160663663) 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, 80333331 + 80333332.

It is an arithmetic number, because the mean of its divisors is an integer number (80333332).

Almost surely, 2^160666663 is an apocalyptic number.

160666663 is a deficient number, since it is larger than the sum of its proper divisors (1).

160666663 is an equidigital number, since it uses as much as digits as its factorization.

160666663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 160666663 is about 12675.4354165843. The cubic root of 160666663 is about 543.6364792653.

The spelling of 160666663 in words is "one hundred sixty million, six hundred sixty-six thousand, six hundred sixty-three".