66753808 has 20 divisors (see below), whose sum is σ = 141093648. Its totient is φ = 30342560.

The previous prime is 66753803. The next prime is 66753811. The reversal of 66753808 is 80835766.

66753808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66753803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 189466 + ... + 189817.

Almost surely, 2^66753808 is an apocalyptic number.

It is an amenable number.

66753808 is an abundant number, since it is smaller than the sum of its proper divisors (74339840).

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

66753808 is a wasteful number, since it uses less digits than its factorization.

66753808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379302 (or 379296 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 66753808 is about 8170.3003616758. The cubic root of 66753808 is about 405.6567265148.

The spelling of 66753808 in words is "sixty-six million, seven hundred fifty-three thousand, eight hundred eight".