6659340481 has 4 divisors (see below), whose sum is σ = 6666509700. Its totient is φ = 6652171264.

The previous prime is 6659340461. The next prime is 6659340511. The reversal of 6659340481 is 1840439566.

6659340481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 789329025 + 5870011456 = 28095^2 + 76616^2 .

It is a cyclic number.

It is not a de Polignac number, because 6659340481 - 2¹³ = 6659332289 is a prime.

It is a super-2 number, since 2×6659340481² = 88693631283770622722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6659340421) 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, 3583216 + ... + 3585073.

It is an arithmetic number, because the mean of its divisors is an integer number (1666627425).

Almost surely, 2^6659340481 is an apocalyptic number.

It is an amenable number.

6659340481 is a deficient number, since it is larger than the sum of its proper divisors (7169219).

6659340481 is an equidigital number, since it uses as much as digits as its factorization.

6659340481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7169218.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 6659340481 is about 81604.7822189362. The cubic root of 6659340481 is about 1881.3823846000.

The spelling of 6659340481 in words is "six billion, six hundred fifty-nine million, three hundred forty thousand, four hundred eighty-one".