6546665585 has 8 divisors (see below), whose sum is σ = 7895878056. Its totient is φ = 5210746240.

The previous prime is 6546665569. The next prime is 6546665641. The reversal of 6546665585 is 5855666456.

It can be written as a sum of positive squares in 4 ways, for example, as 4029837361 + 2516828224 = 63481^2 + 50168^2 .

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

It is not a de Polignac number, because 6546665585 - 2⁴ = 6546665569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6546665585.

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, 3322196 + ... + 3324165.

It is an arithmetic number, because the mean of its divisors is an integer number (986984757).

Almost surely, 2^6546665585 is an apocalyptic number.

It is an amenable number.

6546665585 is a deficient number, since it is larger than the sum of its proper divisors (1349212471).

6546665585 is a wasteful number, since it uses less digits than its factorization.

6546665585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6646563.

The product of its digits is 25920000, while the sum is 56.

The square root of 6546665585 is about 80911.4675741331. The cubic root of 6546665585 is about 1870.7110820072.

The spelling of 6546665585 in words is "six billion, five hundred forty-six million, six hundred sixty-five thousand, five hundred eighty-five".