6656207085 has 24 divisors (see below), whose sum is σ = 12586283424. Its totient is φ = 3227251680.

The previous prime is 6656207083. The next prime is 6656207099. The reversal of 6656207085 is 5807026566.

6656207085 is a `hidden beast` number, since 6 + 6 + 562 + 0 + 7 + 0 + 85 = 666.

It is not a de Polignac number, because 6656207085 - 2¹ = 6656207083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6656207085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656207083) 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 23 ways as a sum of consecutive naturals, for example, 6722947 + ... + 6723936.

It is an arithmetic number, because the mean of its divisors is an integer number (524428476).

Almost surely, 2^6656207085 is an apocalyptic number.

It is an amenable number.

6656207085 is a deficient number, since it is larger than the sum of its proper divisors (5930076339).

6656207085 is a wasteful number, since it uses less digits than its factorization.

6656207085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446905 (or 13446902 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 6656207085 is about 81585.5813547958. The cubic root of 6656207085 is about 1881.0872582333.

The spelling of 6656207085 in words is "six billion, six hundred fifty-six million, two hundred seven thousand, eighty-five".