6646747085 has 8 divisors (see below), whose sum is σ = 8701196256. Its totient is φ = 4833997840.

The previous prime is 6646746961. The next prime is 6646747139. The reversal of 6646747085 is 5807476466.

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

It is not a de Polignac number, because 6646747085 - 2¹⁰ = 6646746061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60424919 + ... + 60425028.

It is an arithmetic number, because the mean of its divisors is an integer number (1087649532).

Almost surely, 2^6646747085 is an apocalyptic number.

It is an amenable number.

6646747085 is a deficient number, since it is larger than the sum of its proper divisors (2054449171).

6646747085 is a wasteful number, since it uses less digits than its factorization.

6646747085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120849963.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The square root of 6646747085 is about 81527.5848102960. The cubic root of 6646747085 is about 1880.1956832867.

The spelling of 6646747085 in words is "six billion, six hundred forty-six million, seven hundred forty-seven thousand, eighty-five".