66700317 has 16 divisors (see below), whose sum is σ = 95901120. Its totient is φ = 41097600.

The previous prime is 66700303. The next prime is 66700321. The reversal of 66700317 is 71300766.

It is not a de Polignac number, because 66700317 - 2¹⁰ = 66699293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66700327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11934 + ... + 16607.

It is an arithmetic number, because the mean of its divisors is an integer number (5993820).

Almost surely, 2^66700317 is an apocalyptic number.

It is an amenable number.

66700317 is a deficient number, since it is larger than the sum of its proper divisors (29200803).

66700317 is a wasteful number, since it uses less digits than its factorization.

66700317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 66700317 is about 8167.0262029701. The cubic root of 66700317 is about 405.5483442710.

The spelling of 66700317 in words is "sixty-six million, seven hundred thousand, three hundred seventeen".