66003305 has 8 divisors (see below), whose sum is σ = 79348032. Its totient is φ = 52706608.

The previous prime is 66003293. The next prime is 66003313. The reversal of 66003305 is 50330066.

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 66003305 - 2¹² = 65999209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8909 + ... + 14538.

It is an arithmetic number, because the mean of its divisors is an integer number (9918504).

Almost surely, 2^66003305 is an apocalyptic number.

It is an amenable number.

66003305 is a deficient number, since it is larger than the sum of its proper divisors (13344727).

66003305 is a wasteful number, since it uses less digits than its factorization.

66003305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24015.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 66003305 is about 8124.2418107784. The cubic root of 66003305 is about 404.1307475548.

The spelling of 66003305 in words is "sixty-six million, three thousand, three hundred five".