66662317 has 8 divisors (see below), whose sum is σ = 70308000. Its totient is φ = 63030384.

The previous prime is 66662293. The next prime is 66662327. The reversal of 66662317 is 71326666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66662317 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 (66662327) 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, 7434 + ... + 13732.

It is an arithmetic number, because the mean of its divisors is an integer number (8788500).

Almost surely, 2^66662317 is an apocalyptic number.

It is an amenable number.

66662317 is a deficient number, since it is larger than the sum of its proper divisors (3645683).

66662317 is a wasteful number, since it uses less digits than its factorization.

66662317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6875.

The product of its digits is 54432, while the sum is 37.

The square root of 66662317 is about 8164.6994433353. The cubic root of 66662317 is about 405.4713143293.

The spelling of 66662317 in words is "sixty-six million, six hundred sixty-two thousand, three hundred seventeen".