166655473 has 8 divisors (see below), whose sum is σ = 172694016. Its totient is φ = 160658400.

The previous prime is 166655443. The next prime is 166655491. The reversal of 166655473 is 374556661.

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

It is a cyclic number.

It is not a de Polignac number, because 166655473 - 2²¹ = 164558321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166655443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068 + ... + 18373.

It is an arithmetic number, because the mean of its divisors is an integer number (21586752).

Almost surely, 2^166655473 is an apocalyptic number.

It is an amenable number.

166655473 is a deficient number, since it is larger than the sum of its proper divisors (6038543).

166655473 is a wasteful number, since it uses less digits than its factorization.

166655473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20735.

The product of its digits is 453600, while the sum is 43.

The square root of 166655473 is about 12909.5109512328. The cubic root of 166655473 is about 550.3088876489.

The spelling of 166655473 in words is "one hundred sixty-six million, six hundred fifty-five thousand, four hundred seventy-three".