6685086009 has 16 divisors (see below), whose sum is σ = 10188097920. Its totient is φ = 3819561600.

The previous prime is 6685086007. The next prime is 6685086013. The reversal of 6685086009 is 9006805866.

It is not a de Polignac number, because 6685086009 - 2¹ = 6685086007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6685086007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207607 + ... + 237635.

It is an arithmetic number, because the mean of its divisors is an integer number (636756120).

Almost surely, 2^6685086009 is an apocalyptic number.

It is an amenable number.

6685086009 is a deficient number, since it is larger than the sum of its proper divisors (3503011911).

6685086009 is a wasteful number, since it uses less digits than its factorization.

6685086009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40640.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 6685086009 is about 81762.3752651548. The cubic root of 6685086009 is about 1883.8037903476.

The spelling of 6685086009 in words is "six billion, six hundred eighty-five million, eighty-six thousand, nine".