66000093 has 4 divisors (see below), whose sum is σ = 88000128. Its totient is φ = 44000060.

The previous prime is 66000083. The next prime is 66000149. The reversal of 66000093 is 39000066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66000093 - 2⁶ = 66000029 is a prime.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11000013 + ... + 11000018.

It is an arithmetic number, because the mean of its divisors is an integer number (22000032).

Almost surely, 2^66000093 is an apocalyptic number.

It is an amenable number.

66000093 is a deficient number, since it is larger than the sum of its proper divisors (22000035).

66000093 is a wasteful number, since it uses less digits than its factorization.

66000093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22000034.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 66000093 is about 8124.0441283883. The cubic root of 66000093 is about 404.1241918779.

The spelling of 66000093 in words is "sixty-six million, ninety-three", and thus it is an aban number and an uban number.