168666093 has 6 divisors (see below), whose sum is σ = 243628814. Its totient is φ = 112444056.

The previous prime is 168666079. The next prime is 168666101. The reversal of 168666093 is 390666861.

It can be written as a sum of positive squares in only one way, i.e., 165328164 + 3337929 = 12858^2 + 1827^2 .

It is not a de Polignac number, because 168666093 - 2⁴ = 168666077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168666013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9370330 + ... + 9370347.

Almost surely, 2^168666093 is an apocalyptic number.

It is an amenable number.

168666093 is a deficient number, since it is larger than the sum of its proper divisors (74962721).

168666093 is a wasteful number, since it uses less digits than its factorization.

168666093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18740683 (or 18740680 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 168666093 is about 12987.1510732724. The cubic root of 168666093 is about 552.5131196764.

The spelling of 168666093 in words is "one hundred sixty-eight million, six hundred sixty-six thousand, ninety-three".