6505506340 has 12 divisors (see below), whose sum is σ = 13661563356. Its totient is φ = 2602202528.

The previous prime is 6505506307. The next prime is 6505506341. The reversal of 6505506340 is 436055056.

It can be written as a sum of positive squares in 2 ways, for example, as 4553280484 + 1952225856 = 67478^2 + 44184^2 .

It is a super-2 number, since 2×6505506340² = 84643225479560391200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6505506296 and 6505506305.

It is not an unprimeable number, because it can be changed into a prime (6505506341) 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, 162637639 + ... + 162637678.

It is an arithmetic number, because the mean of its divisors is an integer number (1138463613).

Almost surely, 2^6505506340 is an apocalyptic number.

It is an amenable number.

6505506340 is an abundant number, since it is smaller than the sum of its proper divisors (7156057016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6505506340 is a wasteful number, since it uses less digits than its factorization.

6505506340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325275326 (or 325275324 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 6505506340 is about 80656.7191249433. The cubic root of 6505506340 is about 1866.7824162209.

The spelling of 6505506340 in words is "six billion, five hundred five million, five hundred six thousand, three hundred forty".