66707384 has 8 divisors (see below), whose sum is σ = 125076360. Its totient is φ = 33353688.

The previous prime is 66707359. The next prime is 66707413. The reversal of 66707384 is 48370766.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4169204 + ... + 4169219.

It is an arithmetic number, because the mean of its divisors is an integer number (15634545).

Almost surely, 2^66707384 is an apocalyptic number.

It is an amenable number.

66707384 is a deficient number, since it is larger than the sum of its proper divisors (58368976).

66707384 is a wasteful number, since it uses less digits than its factorization.

66707384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338429 (or 8338425 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 66707384 is about 8167.4588459324. The cubic root of 66707384 is about 405.5626665865.

The spelling of 66707384 in words is "sixty-six million, seven hundred seven thousand, three hundred eighty-four".