66006028 has 24 divisors (see below), whose sum is σ = 126224784. Its totient is φ = 29952000.

The previous prime is 66006013. The next prime is 66006047. The reversal of 66006028 is 82060066.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66005987 and 66006005.

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, 40428 + ... + 42028.

It is an arithmetic number, because the mean of its divisors is an integer number (5259366).

Almost surely, 2^66006028 is an apocalyptic number.

It is an amenable number.

66006028 is a deficient number, since it is larger than the sum of its proper divisors (60218756).

66006028 is a wasteful number, since it uses less digits than its factorization.

66006028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553 (or 2551 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66006028 is about 8124.4093939190. The cubic root of 66006028 is about 404.1363050184.

The spelling of 66006028 in words is "sixty-six million, six thousand, twenty-eight".