66000395 has 32 divisors (see below), whose sum is σ = 87521280. Its totient is φ = 47589120.

The previous prime is 66000373. The next prime is 66000419. The reversal of 66000395 is 59300066.

It is not a de Polignac number, because 66000395 - 2⁶ = 66000331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214832 + ... + 215138.

It is an arithmetic number, because the mean of its divisors is an integer number (2735040).

Almost surely, 2^66000395 is an apocalyptic number.

66000395 is a deficient number, since it is larger than the sum of its proper divisors (21520885).

66000395 is a wasteful number, since it uses less digits than its factorization.

66000395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 66000395 is about 8124.0627151691. The cubic root of 66000395 is about 404.1248082676.

The spelling of 66000395 in words is "sixty-six million, three hundred ninety-five", and thus it is an aban number.