66706168 has 8 divisors (see below), whose sum is σ = 125074080. Its totient is φ = 33353080.

The previous prime is 66706163. The next prime is 66706183. The reversal of 66706168 is 86160766.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 66706168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66706163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4169128 + ... + 4169143.

It is an arithmetic number, because the mean of its divisors is an integer number (15634260).

Almost surely, 2^66706168 is an apocalyptic number.

It is an amenable number.

66706168 is a deficient number, since it is larger than the sum of its proper divisors (58367912).

66706168 is a wasteful number, since it uses less digits than its factorization.

66706168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338277 (or 8338273 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 66706168 is about 8167.3844038346. The cubic root of 66706168 is about 405.5602022556.

The spelling of 66706168 in words is "sixty-six million, seven hundred six thousand, one hundred sixty-eight".