6660105313 has 4 divisors (see below), whose sum is σ = 6822546948. Its totient is φ = 6497663680.

The previous prime is 6660105311. The next prime is 6660105383. The reversal of 6660105313 is 3135010666.

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 633377889 + 6026727424 = 25167^2 + 77632^2 .

It is a cyclic number.

It is not a de Polignac number, because 6660105313 - 2¹ = 6660105311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660105311) 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, 81220756 + ... + 81220837.

It is an arithmetic number, because the mean of its divisors is an integer number (1705636737).

Almost surely, 2^6660105313 is an apocalyptic number.

It is an amenable number.

6660105313 is a deficient number, since it is larger than the sum of its proper divisors (162441635).

6660105313 is a wasteful number, since it uses less digits than its factorization.

6660105313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162441634.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 6660105313 is about 81609.4682803411. The cubic root of 6660105313 is about 1881.4544080670.

Adding to 6660105313 its reverse (3135010666), we get a palindrome (9795115979).

The spelling of 6660105313 in words is "six billion, six hundred sixty million, one hundred five thousand, three hundred thirteen".