6659614687 has 8 divisors (see below), whose sum is σ = 7269121152. Its totient is φ = 6050789400.

The previous prime is 6659614681. The next prime is 6659614699. The reversal of 6659614687 is 7864169566.

6659614687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6659614687 - 2²⁷ = 6525396959 is a prime.

It is a super-2 number, since 2×6659614687² = 88700935558612215938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659614681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149739 + ... + 189052.

It is an arithmetic number, because the mean of its divisors is an integer number (908640144).

Almost surely, 2^6659614687 is an apocalyptic number.

6659614687 is a deficient number, since it is larger than the sum of its proper divisors (609506465).

6659614687 is a wasteful number, since it uses less digits than its factorization.

6659614687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340589.

The product of its digits is 13063680, while the sum is 58.

The square root of 6659614687 is about 81606.4622870027. The cubic root of 6659614687 is about 1881.4082069398.

The spelling of 6659614687 in words is "six billion, six hundred fifty-nine million, six hundred fourteen thousand, six hundred eighty-seven".