6659503847 has 4 divisors (see below), whose sum is σ = 6670849416. Its totient is φ = 6648158280.

The previous prime is 6659503787. The next prime is 6659503849. The reversal of 6659503847 is 7483059566.

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

It is a cyclic number.

It is not a de Polignac number, because 6659503847 - 2¹² = 6659499751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659503849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5671904 + ... + 5673077.

It is an arithmetic number, because the mean of its divisors is an integer number (1667712354).

Almost surely, 2^6659503847 is an apocalyptic number.

6659503847 is a deficient number, since it is larger than the sum of its proper divisors (11345569).

6659503847 is a wasteful number, since it uses less digits than its factorization.

6659503847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11345568.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The square root of 6659503847 is about 81605.7831712925. The cubic root of 6659503847 is about 1881.3977690765.

The spelling of 6659503847 in words is "six billion, six hundred fifty-nine million, five hundred three thousand, eight hundred forty-seven".