66318113 has 4 divisors (see below), whose sum is σ = 69808560. Its totient is φ = 62827668.

The previous prime is 66318103. The next prime is 66318121. The reversal of 66318113 is 31181366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66318113 is a prime.

It is a super-2 number, since 2×66318113² = 8796184223761538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66318103) 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 3 ways as a sum of consecutive naturals, for example, 1745195 + ... + 1745232.

It is an arithmetic number, because the mean of its divisors is an integer number (17452140).

Almost surely, 2^66318113 is an apocalyptic number.

It is an amenable number.

66318113 is a deficient number, since it is larger than the sum of its proper divisors (3490447).

66318113 is a wasteful number, since it uses less digits than its factorization.

66318113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490446.

The product of its digits is 2592, while the sum is 29.

The square root of 66318113 is about 8143.5933714792. The cubic root of 66318113 is about 404.7722399718.

Adding to 66318113 its reverse (31181366), we get a palindrome (97499479).

The spelling of 66318113 in words is "sixty-six million, three hundred eighteen thousand, one hundred thirteen".