66111313 has 8 divisors (see below), whose sum is σ = 68499200. Its totient is φ = 63739440.

The previous prime is 66111293. The next prime is 66111337. The reversal of 66111313 is 31311166.

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 a de Polignac number, because none of the positive numbers 2^k-66111313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66111343) 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, 4738 + ... + 12436.

It is an arithmetic number, because the mean of its divisors is an integer number (8562400).

Almost surely, 2^66111313 is an apocalyptic number.

It is an amenable number.

66111313 is a deficient number, since it is larger than the sum of its proper divisors (2387887).

66111313 is a wasteful number, since it uses less digits than its factorization.

66111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8007.

The product of its digits is 324, while the sum is 22.

The square root of 66111313 is about 8130.8863600471. The cubic root of 66111313 is about 404.3510676640.

Adding to 66111313 its reverse (31311166), we get a palindrome (97422479).

The spelling of 66111313 in words is "sixty-six million, one hundred eleven thousand, three hundred thirteen".