66666093 has 8 divisors (see below), whose sum is σ = 95725728. Its totient is φ = 41025264.

The previous prime is 66666071. The next prime is 66666097. The reversal of 66666093 is 39066666.

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

It is not a de Polignac number, because 66666093 - 2¹⁰ = 66665069 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66666097) 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, 854655 + ... + 854732.

It is an arithmetic number, because the mean of its divisors is an integer number (11965716).

Almost surely, 2^66666093 is an apocalyptic number.

It is an amenable number.

66666093 is a deficient number, since it is larger than the sum of its proper divisors (29059635).

66666093 is a wasteful number, since it uses less digits than its factorization.

66666093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709403.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 66666093 is about 8164.9306794363. The cubic root of 66666093 is about 405.4789699827.

The spelling of 66666093 in words is "sixty-six million, six hundred sixty-six thousand, ninety-three".