165100666 has 8 divisors (see below), whose sum is σ = 247752180. Its totient is φ = 82516608.

The previous prime is 165100619. The next prime is 165100711. The reversal of 165100666 is 666001561.

It can be written as a sum of positive squares in 2 ways, for example, as 163098441 + 2002225 = 12771^2 + 1415^2 .

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

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, 10221 + ... + 20848.

Almost surely, 2^165100666 is an apocalyptic number.

165100666 is a deficient number, since it is larger than the sum of its proper divisors (82651514).

165100666 is a wasteful number, since it uses less digits than its factorization.

165100666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33728.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 165100666 is about 12849.1503999292. The cubic root of 165100666 is about 548.5921746957.

The spelling of 165100666 in words is "one hundred sixty-five million, one hundred thousand, six hundred sixty-six".