166543366 has 16 divisors (see below), whose sum is σ = 272900160. Its totient is φ = 75597480.

The previous prime is 166543357. The next prime is 166543387. The reversal of 166543366 is 663345661.

It is a congruent number.

It is an unprimeable number.

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, 12505 + ... + 22123.

It is an arithmetic number, because the mean of its divisors is an integer number (17056260).

Almost surely, 2^166543366 is an apocalyptic number.

166543366 is a deficient number, since it is larger than the sum of its proper divisors (106356794).

166543366 is a wasteful number, since it uses less digits than its factorization.

166543366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419.

The product of its digits is 233280, while the sum is 40.

The square root of 166543366 is about 12905.1681895278. The cubic root of 166543366 is about 550.1854647254.

The spelling of 166543366 in words is "one hundred sixty-six million, five hundred forty-three thousand, three hundred sixty-six".