166009307 has 2 divisors, whose sum is σ = 166009308. Its totient is φ = 166009306.

The previous prime is 166009279. The next prime is 166009351. The reversal of 166009307 is 703900661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166009307 - 2¹² = 166005211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166009367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83004653 + 83004654.

It is an arithmetic number, because the mean of its divisors is an integer number (83004654).

Almost surely, 2^166009307 is an apocalyptic number.

166009307 is a deficient number, since it is larger than the sum of its proper divisors (1).

166009307 is an equidigital number, since it uses as much as digits as its factorization.

166009307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 166009307 is about 12884.4599033099. The cubic root of 166009307 is about 549.5967369044.

Adding to 166009307 its reverse (703900661), we get a palindrome (869909968).

The spelling of 166009307 in words is "one hundred sixty-six million, nine thousand, three hundred seven".