166165106 has 8 divisors (see below), whose sum is σ = 263909340. Its totient is φ = 78195328.

The previous prime is 166165079. The next prime is 166165141. The reversal of 166165106 is 601561661.

It can be written as a sum of positive squares in 2 ways, for example, as 161925625 + 4239481 = 12725^2 + 2059^2 .

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

It is a super-2 number, since 2×166165106² = 55221684903982472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443571 + ... + 2443638.

Almost surely, 2^166165106 is an apocalyptic number.

166165106 is a deficient number, since it is larger than the sum of its proper divisors (97744234).

166165106 is a wasteful number, since it uses less digits than its factorization.

166165106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4887228.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 166165106 is about 12890.5044897397. The cubic root of 166165106 is about 549.7686145153.

The spelling of 166165106 in words is "one hundred sixty-six million, one hundred sixty-five thousand, one hundred six".