6545487447 has 20 divisors (see below), whose sum is σ = 9781267320. Its totient is φ = 4362123024.

The previous prime is 6545487433. The next prime is 6545487457. The reversal of 6545487447 is 7447845456.

6545487447 is a `hidden beast` number, since 6 + 54 + 548 + 7 + 4 + 47 = 666.

It is not a de Polignac number, because 6545487447 - 2¹¹ = 6545485399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6545487393 and 6545487402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545487457) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 246829 + ... + 272057.

It is an arithmetic number, because the mean of its divisors is an integer number (489063366).

Almost surely, 2^6545487447 is an apocalyptic number.

6545487447 is a deficient number, since it is larger than the sum of its proper divisors (3235779873).

6545487447 is a wasteful number, since it uses less digits than its factorization.

6545487447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28444 (or 28435 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 54.

The square root of 6545487447 is about 80904.1868323265. The cubic root of 6545487447 is about 1870.5988575471.

The spelling of 6545487447 in words is "six billion, five hundred forty-five million, four hundred eighty-seven thousand, four hundred forty-seven".