66065608 has 32 divisors (see below), whose sum is σ = 142113600. Its totient is φ = 28204992.

The previous prime is 66065579. The next prime is 66065611. The reversal of 66065608 is 80656066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13383 + ... + 17641.

It is an arithmetic number, because the mean of its divisors is an integer number (4441050).

Almost surely, 2^66065608 is an apocalyptic number.

It is an amenable number.

66065608 is an abundant number, since it is smaller than the sum of its proper divisors (76047992).

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

66065608 is a wasteful number, since it uses less digits than its factorization.

66065608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 66065608 is about 8128.0752949268. The cubic root of 66065608 is about 404.2578656326.

The spelling of 66065608 in words is "sixty-six million, sixty-five thousand, six hundred eight".