66663113 has 8 divisors (see below), whose sum is σ = 75069696. Its totient is φ = 58647600.

The previous prime is 66663109. The next prime is 66663119. The reversal of 66663113 is 31136666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66663113 - 2² = 66663109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66663113.

It is not an unprimeable number, because it can be changed into a prime (66663119) 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, 97406 + ... + 98087.

It is an arithmetic number, because the mean of its divisors is an integer number (9383712).

Almost surely, 2^66663113 is an apocalyptic number.

It is an amenable number.

66663113 is a deficient number, since it is larger than the sum of its proper divisors (8406583).

66663113 is a wasteful number, since it uses less digits than its factorization.

66663113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195535.

The product of its digits is 11664, while the sum is 32.

The square root of 66663113 is about 8164.7481896259. The cubic root of 66663113 is about 405.4729282040.

Adding to 66663113 its reverse (31136666), we get a palindrome (97799779).

It can be divided in two parts, 6666 and 3113, that added together give a palindrome (9779).

The spelling of 66663113 in words is "sixty-six million, six hundred sixty-three thousand, one hundred thirteen".