166053566 has 16 divisors (see below), whose sum is σ = 284828640. Its totient is φ = 71124480.

The previous prime is 166053557. The next prime is 166053607. The reversal of 166053566 is 665350661.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 45290 + ... + 48818.

It is an arithmetic number, because the mean of its divisors is an integer number (17801790).

Almost surely, 2^166053566 is an apocalyptic number.

166053566 is a deficient number, since it is larger than the sum of its proper divisors (118775074).

166053566 is a wasteful number, since it uses less digits than its factorization.

166053566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 166053566 is about 12886.1773230078. The cubic root of 166053566 is about 549.6455744084.

The spelling of 166053566 in words is "one hundred sixty-six million, fifty-three thousand, five hundred sixty-six".