6680143585 has 16 divisors (see below), whose sum is σ = 8175407760. Its totient is φ = 5238155520.

The previous prime is 6680143583. The next prime is 6680143597. The reversal of 6680143585 is 5853410866.

It can be written as a sum of positive squares in 8 ways, for example, as 54346384 + 6625797201 = 7372^2 + 81399^2 .

It is not a de Polignac number, because 6680143585 - 2¹ = 6680143583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6680143583) 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, 271495 + ... + 295075.

It is an arithmetic number, because the mean of its divisors is an integer number (510962985).

Almost surely, 2^6680143585 is an apocalyptic number.

It is an amenable number.

6680143585 is a deficient number, since it is larger than the sum of its proper divisors (1495264175).

6680143585 is a wasteful number, since it uses less digits than its factorization.

6680143585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24708.

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 6680143585 is about 81732.1453590936. The cubic root of 6680143585 is about 1883.3394307022.

The spelling of 6680143585 in words is "six billion, six hundred eighty million, one hundred forty-three thousand, five hundred eighty-five".