66417013 has 8 divisors (see below), whose sum is σ = 71590400. Its totient is φ = 61252848.

The previous prime is 66416981. The next prime is 66417019. The reversal of 66417013 is 31071466.

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 66417013 - 2⁵ = 66416981 is a prime.

It is a super-2 number, since 2×66417013² = 8822439231684338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66417019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23068 + ... + 25786.

It is an arithmetic number, because the mean of its divisors is an integer number (8948800).

Almost surely, 2^66417013 is an apocalyptic number.

It is an amenable number.

66417013 is a deficient number, since it is larger than the sum of its proper divisors (5173387).

66417013 is a wasteful number, since it uses less digits than its factorization.

66417013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66417013 is about 8149.6633672809. The cubic root of 66417013 is about 404.9733519021.

Adding to 66417013 its reverse (31071466), we get a palindrome (97488479).

The spelling of 66417013 in words is "sixty-six million, four hundred seventeen thousand, thirteen".