6659385567 has 4 divisors (see below), whose sum is σ = 8879180760. Its totient is φ = 4439590376.

The previous prime is 6659385511. The next prime is 6659385617. The reversal of 6659385567 is 7655839566.

It is a happy number.

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 6659385567 - 2¹¹ = 6659383519 is a prime.

It is a super-2 number, since 2×6659385567² = 88694832259935822978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6659385567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659383567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109897592 + ... + 1109897597.

It is an arithmetic number, because the mean of its divisors is an integer number (2219795190).

Almost surely, 2^6659385567 is an apocalyptic number.

6659385567 is a deficient number, since it is larger than the sum of its proper divisors (2219795193).

6659385567 is a wasteful number, since it uses less digits than its factorization.

6659385567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219795192.

The product of its digits is 40824000, while the sum is 60.

The square root of 6659385567 is about 81605.0584645339. The cubic root of 6659385567 is about 1881.3866304566.

The spelling of 6659385567 in words is "six billion, six hundred fifty-nine million, three hundred eighty-five thousand, five hundred sixty-seven".