166010906 has 16 divisors (see below), whose sum is σ = 261138600. Its totient is φ = 79043328.

The previous prime is 166010903. The next prime is 166010939. The reversal of 166010906 is 609010661.

It can be written as a sum of positive squares in 4 ways, for example, as 165508225 + 502681 = 12865^2 + 709^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (166010903) 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 in 7 ways as a sum of consecutive naturals, for example, 15371 + ... + 23838.

Almost surely, 2^166010906 is an apocalyptic number.

166010906 is a deficient number, since it is larger than the sum of its proper divisors (95127694).

166010906 is a wasteful number, since it uses less digits than its factorization.

166010906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39313.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 166010906 is about 12884.5219546555. The cubic root of 166010906 is about 549.5985014688.

The spelling of 166010906 in words is "one hundred sixty-six million, ten thousand, nine hundred six".