445166 has 8 divisors (see below), whose sum is σ = 674544. Its totient is φ = 220320.

The previous prime is 445157. The next prime is 445169. The reversal of 445166 is 661544.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445169) by changing a digit.

445166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875 + ... + 1286.

It is an arithmetic number, because the mean of its divisors is an integer number (84318).

2⁴⁴⁵¹⁶⁶ is an apocalyptic number.

445166 is a deficient number, since it is larger than the sum of its proper divisors (229378).

445166 is a wasteful number, since it uses less digits than its factorization.

445166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266.

The product of its digits is 2880, while the sum is 26.

The square root of 445166 is about 667.2076138654. The cubic root of 445166 is about 76.3555592536.

The spelling of 445166 in words is "four hundred forty-five thousand, one hundred sixty-six".