66066427 has 8 divisors (see below), whose sum is σ = 75680000. Its totient is φ = 56496744.

The previous prime is 66066397. The next prime is 66066431. The reversal of 66066427 is 72466066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66066427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66066227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7677 + ... + 13822.

It is an arithmetic number, because the mean of its divisors is an integer number (9460000).

Almost surely, 2^66066427 is an apocalyptic number.

66066427 is a deficient number, since it is larger than the sum of its proper divisors (9613573).

66066427 is a wasteful number, since it uses less digits than its factorization.

66066427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21945.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 66066427 is about 8128.1256757016. The cubic root of 66066427 is about 404.2595361227.

The spelling of 66066427 in words is "sixty-six million, sixty-six thousand, four hundred twenty-seven".