6506722280 has 32 divisors (see below), whose sum is σ = 14658294600. Its totient is φ = 2599458816.

The previous prime is 6506722279. The next prime is 6506722297. The reversal of 6506722280 is 822276056.

It can be written as a sum of positive squares in 4 ways, for example, as 6074331844 + 432390436 = 77938^2 + 20794^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68177 + ... + 132896.

Almost surely, 2^6506722280 is an apocalyptic number.

It is an amenable number.

6506722280 is an abundant number, since it is smaller than the sum of its proper divisors (8151572320).

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

6506722280 is a wasteful number, since it uses less digits than its factorization.

6506722280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201893 (or 201889 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 6506722280 is about 80664.2565204688. The cubic root of 6506722280 is about 1866.8987153418.

The spelling of 6506722280 in words is "six billion, five hundred six million, seven hundred twenty-two thousand, two hundred eighty".