65660113 has 4 divisors (see below), whose sum is σ = 65735860. Its totient is φ = 65584368.

The previous prime is 65660107. The next prime is 65660117. The reversal of 65660113 is 31106656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37112464 + 28547649 = 6092^2 + 5343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65660113 is a prime.

It is a super-2 number, since 2×65660113² = 8622500878345538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65660117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36558 + ... + 38311.

It is an arithmetic number, because the mean of its divisors is an integer number (16433965).

Almost surely, 2^65660113 is an apocalyptic number.

It is an amenable number.

65660113 is a deficient number, since it is larger than the sum of its proper divisors (75747).

65660113 is an equidigital number, since it uses as much as digits as its factorization.

65660113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75746.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 65660113 is about 8103.0928046025. The cubic root of 65660113 is about 403.4290881335.

Adding to 65660113 its reverse (31106656), we get a palindrome (96766769).

The spelling of 65660113 in words is "sixty-five million, six hundred sixty thousand, one hundred thirteen".