6505641 has 6 divisors (see below), whose sum is σ = 9397050. Its totient is φ = 4337088.

The previous prime is 6505627. The next prime is 6505643. The reversal of 6505641 is 1465056.

It is a happy number.

6505641 is a `hidden beast` number, since 650 + 5 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 275625 = 2496^2 + 525^2 .

It is not a de Polignac number, because 6505641 - 2¹¹ = 6503593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6505643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361416 + ... + 361433.

It is an arithmetic number, because the mean of its divisors is an integer number (1566175).

Almost surely, 2^6505641 is an apocalyptic number.

It is an amenable number.

6505641 is a deficient number, since it is larger than the sum of its proper divisors (2891409).

6505641 is a wasteful number, since it uses less digits than its factorization.

6505641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722855 (or 722852 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6505641 is about 2550.6158079962. The cubic root of 6505641 is about 186.6795296550.

The spelling of 6505641 in words is "six million, five hundred five thousand, six hundred forty-one".