66970117 has 8 divisors (see below), whose sum is σ = 71388800. Its totient is φ = 62640864.

The previous prime is 66970109. The next prime is 66970129. The reversal of 66970117 is 71107966.

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

It is a cyclic number.

It is not a de Polignac number, because 66970117 - 2³ = 66970109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66970187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20808 + ... + 23809.

It is an arithmetic number, because the mean of its divisors is an integer number (8923600).

Almost surely, 2^66970117 is an apocalyptic number.

It is an amenable number.

66970117 is a deficient number, since it is larger than the sum of its proper divisors (4418683).

66970117 is a wasteful number, since it uses less digits than its factorization.

66970117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44715.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 66970117 is about 8183.5271735359. The cubic root of 66970117 is about 406.0944173626.

The spelling of 66970117 in words is "sixty-six million, nine hundred seventy thousand, one hundred seventeen".