900166 has 4 divisors (see below), whose sum is σ = 1350252. Its totient is φ = 450082.

The previous prime is 900161. The next prime is 900169. The reversal of 900166 is 661009.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225040 + ... + 225043.

It is an arithmetic number, because the mean of its divisors is an integer number (337563).

2⁹⁰⁰¹⁶⁶ is an apocalyptic number.

900166 is a deficient number, since it is larger than the sum of its proper divisors (450086).

900166 is a wasteful number, since it uses less digits than its factorization.

900166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450085.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 900166 is about 948.7707836986. The cubic root of 900166 is about 96.5548740674.

The spelling of 900166 in words is "nine hundred thousand, one hundred sixty-six".