66081306 has 8 divisors (see below), whose sum is σ = 132162624. Its totient is φ = 22027100.

The previous prime is 66081287. The next prime is 66081377. The reversal of 66081306 is 60318066.

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

66081306 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5506770 + ... + 5506781.

It is an arithmetic number, because the mean of its divisors is an integer number (16520328).

Almost surely, 2^66081306 is an apocalyptic number.

66081306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66081306 is a wasteful number, since it uses less digits than its factorization.

66081306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11013556.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 66081306 is about 8129.0409028372. The cubic root of 66081306 is about 404.2898819752.

The spelling of 66081306 in words is "sixty-six million, eighty-one thousand, three hundred six".