66306061 has 8 divisors (see below), whose sum is σ = 68088384. Its totient is φ = 64531680.

The previous prime is 66306047. The next prime is 66306083. The reversal of 66306061 is 16060366.

66306061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66306061 - 2¹¹ = 66304013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66306011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17416 + ... + 20878.

It is an arithmetic number, because the mean of its divisors is an integer number (8511048).

Almost surely, 2^66306061 is an apocalyptic number.

It is an amenable number.

66306061 is a deficient number, since it is larger than the sum of its proper divisors (1782323).

66306061 is a wasteful number, since it uses less digits than its factorization.

66306061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 66306061 is about 8142.8533696733. The cubic root of 66306061 is about 404.7477187143.

The spelling of 66306061 in words is "sixty-six million, three hundred six thousand, sixty-one".