160666009 has 16 divisors (see below), whose sum is σ = 187238016. Its totient is φ = 135014400.

The previous prime is 160666007. The next prime is 160666039. The reversal of 160666009 is 900666061.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 160666009 - 2¹ = 160666007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160666001) 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 in 15 ways as a sum of consecutive naturals, for example, 250329 + ... + 250969.

It is an arithmetic number, because the mean of its divisors is an integer number (11702376).

Almost surely, 2^160666009 is an apocalyptic number.

It is an amenable number.

160666009 is a deficient number, since it is larger than the sum of its proper divisors (26572007).

160666009 is an equidigital number, since it uses as much as digits as its factorization.

160666009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 160666009 is about 12675.4096186277. The cubic root of 160666009 is about 543.6357416331.

The spelling of 160666009 in words is "one hundred sixty million, six hundred sixty-six thousand, nine".