66967417 has 8 divisors (see below), whose sum is σ = 73127520. Its totient is φ = 60819360.

The previous prime is 66967379. The next prime is 66967429. The reversal of 66967417 is 71476966.

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 66967417 - 2¹⁹ = 66443129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66967477) 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, 11818 + ... + 16540.

It is an arithmetic number, because the mean of its divisors is an integer number (9140940).

Almost surely, 2^66967417 is an apocalyptic number.

It is an amenable number.

66967417 is a deficient number, since it is larger than the sum of its proper divisors (6160103).

66967417 is a wasteful number, since it uses less digits than its factorization.

66967417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023.

The product of its digits is 381024, while the sum is 46.

The square root of 66967417 is about 8183.3622063306. The cubic root of 66967417 is about 406.0889598555.

It can be divided in two parts, 669 and 67417, that added together give a palindrome (68086).

The spelling of 66967417 in words is "sixty-six million, nine hundred sixty-seven thousand, four hundred seventeen".