66707417 has 8 divisors (see below), whose sum is σ = 76514496. Its totient is φ = 56969712.

The previous prime is 66707413. The next prime is 66707419. The reversal of 66707417 is 71470766.

It is a happy number.

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 66707417 - 2² = 66707413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66707413) 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, 15263 + ... + 19140.

It is an arithmetic number, because the mean of its divisors is an integer number (9564312).

Almost surely, 2^66707417 is an apocalyptic number.

It is an amenable number.

66707417 is a deficient number, since it is larger than the sum of its proper divisors (9807079).

66707417 is a wasteful number, since it uses less digits than its factorization.

66707417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34687.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 66707417 is about 8167.4608661444. The cubic root of 66707417 is about 405.5627334634.

The spelling of 66707417 in words is "sixty-six million, seven hundred seven thousand, four hundred seventeen".