66845708 has 6 divisors (see below), whose sum is σ = 116979996. Its totient is φ = 33422852.

The previous prime is 66845689. The next prime is 66845711. The reversal of 66845708 is 80754866.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8355710 + ... + 8355717.

It is an arithmetic number, because the mean of its divisors is an integer number (19496666).

Almost surely, 2^66845708 is an apocalyptic number.

It is an amenable number.

66845708 is a deficient number, since it is larger than the sum of its proper divisors (50134288).

66845708 is a wasteful number, since it uses less digits than its factorization.

66845708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16711431 (or 16711429 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 66845708 is about 8175.9224556010. The cubic root of 66845708 is about 405.8427970907.

The spelling of 66845708 in words is "sixty-six million, eight hundred forty-five thousand, seven hundred eight".