66650808 has 64 divisors (see below), whose sum is σ = 191036160. Its totient is φ = 18982656.

The previous prime is 66650783. The next prime is 66650821. The reversal of 66650808 is 80805666.

66650808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103335 + ... + 103977.

It is an arithmetic number, because the mean of its divisors is an integer number (2984940).

Almost surely, 2^66650808 is an apocalyptic number.

It is an amenable number.

66650808 is an abundant number, since it is smaller than the sum of its proper divisors (124385352).

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

66650808 is a wasteful number, since it uses less digits than its factorization.

66650808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 66650808 is about 8163.9946104833. The cubic root of 66650808 is about 405.4479786171.

The spelling of 66650808 in words is "sixty-six million, six hundred fifty thousand, eight hundred eight".