166667845 has 16 divisors (see below), whose sum is σ = 202095360. Its totient is φ = 131947200.

The previous prime is 166667819. The next prime is 166667849. The reversal of 166667845 is 548766661.

It is not a de Polignac number, because 166667845 - 2⁷ = 166667717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166667849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251815 + ... + 252475.

It is an arithmetic number, because the mean of its divisors is an integer number (12630960).

Almost surely, 2^166667845 is an apocalyptic number.

It is an amenable number.

166667845 is a deficient number, since it is larger than the sum of its proper divisors (35427515).

166667845 is a wasteful number, since it uses less digits than its factorization.

166667845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116.

The product of its digits is 1451520, while the sum is 49.

The square root of 166667845 is about 12909.9901239312. The cubic root of 166667845 is about 550.3225050697.

The spelling of 166667845 in words is "one hundred sixty-six million, six hundred sixty-seven thousand, eight hundred forty-five".