6496843609 has 3 divisors (see below), whose sum is σ = 6496924213. Its totient is φ = 6496763006.

The previous prime is 6496843601. The next prime is 6496843621. The reversal of 6496843609 is 9063486946.

The square root of 6496843609 is 80603.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6496843609 - 2³ = 6496843601 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 6496843609.

It is not an unprimeable number, because it can be changed into a prime (6496843601) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 40302 + ... + 120904.

Almost surely, 2^6496843609 is an apocalyptic number.

6496843609 is the 80603-rd square number.

6496843609 is the 40302-nd centered octagonal number.

It is an amenable number.

6496843609 is a deficient number, since it is larger than the sum of its proper divisors (80604).

6496843609 is an frugal number, since it uses more digits than its factorization.

6496843609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161206 (or 80603 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 55.

The cubic root of 6496843609 is about 1865.9534457900.

The spelling of 6496843609 in words is "six billion, four hundred ninety-six million, eight hundred forty-three thousand, six hundred nine".