66042006 has 8 divisors (see below), whose sum is σ = 132084024. Its totient is φ = 22014000.

The previous prime is 66042001. The next prime is 66042007. The reversal of 66042006 is 60024066.

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

66042006 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66042001) 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 3 ways as a sum of consecutive naturals, for example, 5503495 + ... + 5503506.

It is an arithmetic number, because the mean of its divisors is an integer number (16510503).

Almost surely, 2^66042006 is an apocalyptic number.

66042006 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.

66042006 is a wasteful number, since it uses less digits than its factorization.

66042006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11007006.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66042006 is about 8126.6232839969. The cubic root of 66042006 is about 404.2097193991.

The spelling of 66042006 in words is "sixty-six million, forty-two thousand, six", and thus it is an eban number.