66000099 has 8 divisors (see below), whose sum is σ = 96000192. Its totient is φ = 40000040.

The previous prime is 66000083. The next prime is 66000149. The reversal of 66000099 is 99000066.

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

It is a cyclic number.

It is not a de Polignac number, because 66000099 - 2⁴ = 66000083 is a prime.

66000099 is a strobogrammatic number because it is the same when read upside-down.

66000099 is a modest number, since divided by 99 gives 66 as remainder.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (66000029) 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, 999969 + ... + 1000034.

It is an arithmetic number, because the mean of its divisors is an integer number (12000024).

Almost surely, 2^66000099 is an apocalyptic number.

66000099 is a deficient number, since it is larger than the sum of its proper divisors (30000093).

66000099 is a wasteful number, since it uses less digits than its factorization.

66000099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000017.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 66000099 is about 8124.0444976625. The cubic root of 66000099 is about 404.1242041241.

The spelling of 66000099 in words is "sixty-six million, ninety-nine", and thus it is an aban number and an uban number.