66707313 has 8 divisors (see below), whose sum is σ = 89066400. Its totient is φ = 44409888.

The previous prime is 66707299. The next prime is 66707317. The reversal of 66707313 is 31370766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66707313 - 2⁴ = 66707297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66707317) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 12828 + ... + 17261.

It is an arithmetic number, because the mean of its divisors is an integer number (11133300).

Almost surely, 2^66707313 is an apocalyptic number.

It is an amenable number.

66707313 is a deficient number, since it is larger than the sum of its proper divisors (22359087).

66707313 is a wasteful number, since it uses less digits than its factorization.

66707313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30831.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 66707313 is about 8167.4544994141. The cubic root of 66707313 is about 405.5625226995.

The spelling of 66707313 in words is "sixty-six million, seven hundred seven thousand, three hundred thirteen".