166919066 has 16 divisors (see below), whose sum is σ = 272060160. Its totient is φ = 76515840.

The previous prime is 166919063. The next prime is 166919069. The reversal of 166919066 is 660919661.

It is an interprime number because it is at equal distance from previous prime (166919063) and next prime (166919069).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (166919063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69671 + ... + 72026.

It is an arithmetic number, because the mean of its divisors is an integer number (17003760).

Almost surely, 2^166919066 is an apocalyptic number.

166919066 is a deficient number, since it is larger than the sum of its proper divisors (105141094).

166919066 is a wasteful number, since it uses less digits than its factorization.

166919066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141749.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 166919066 is about 12919.7161733530. The cubic root of 166919066 is about 550.5988694453.

The spelling of 166919066 in words is "one hundred sixty-six million, nine hundred nineteen thousand, sixty-six".