66028008 has 32 divisors (see below), whose sum is σ = 165564000. Its totient is φ = 21943488.

The previous prime is 66028007. The next prime is 66028037. The reversal of 66028008 is 80082066.

It is not an unprimeable number, because it can be changed into a prime (66028003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435 + ... + 12317.

It is an arithmetic number, because the mean of its divisors is an integer number (5173875).

Almost surely, 2^66028008 is an apocalyptic number.

It is an amenable number.

66028008 is an abundant number, since it is smaller than the sum of its proper divisors (99535992).

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

66028008 is a wasteful number, since it uses less digits than its factorization.

66028008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241 (or 8237 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 66028008 is about 8125.7619950378. The cubic root of 66028008 is about 404.1811591549.

The spelling of 66028008 in words is "sixty-six million, twenty-eight thousand, eight".