166506107 has 2 divisors, whose sum is σ = 166506108. Its totient is φ = 166506106.

The previous prime is 166506073. The next prime is 166506113. The reversal of 166506107 is 701605661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166506107 - 2²² = 162311803 is a prime.

It is not a weakly prime, because it can be changed into another prime (166506127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83253053 + 83253054.

It is an arithmetic number, because the mean of its divisors is an integer number (83253054).

Almost surely, 2^166506107 is an apocalyptic number.

166506107 is a deficient number, since it is larger than the sum of its proper divisors (1).

166506107 is an equidigital number, since it uses as much as digits as its factorization.

166506107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 166506107 is about 12903.7245398373. The cubic root of 166506107 is about 550.1444325914.

The spelling of 166506107 in words is "one hundred sixty-six million, five hundred six thousand, one hundred seven".