6505550605 has 4 divisors (see below), whose sum is σ = 7806660732. Its totient is φ = 5204440480.

The previous prime is 6505550593. The next prime is 6505550609. The reversal of 6505550605 is 5060555056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1845303849 + 4660246756 = 42957^2 + 68266^2 .

It is not a de Polignac number, because 6505550605 - 2³¹ = 4358066957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505550609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650555056 + ... + 650555065.

It is an arithmetic number, because the mean of its divisors is an integer number (1951665183).

Almost surely, 2^6505550605 is an apocalyptic number.

It is an amenable number.

6505550605 is a deficient number, since it is larger than the sum of its proper divisors (1301110127).

6505550605 is a wasteful number, since it uses less digits than its factorization.

6505550605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301110126.

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 6505550605 is about 80656.9935281498. The cubic root of 6505550605 is about 1866.7866502206.

The spelling of 6505550605 in words is "six billion, five hundred five million, five hundred fifty thousand, six hundred five".