6532720709 has 2 divisors, whose sum is σ = 6532720710. Its totient is φ = 6532720708.

The previous prime is 6532720681. The next prime is 6532720717. The reversal of 6532720709 is 9070272356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4681570084 + 1851150625 = 68422^2 + 43025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6532720709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6532720729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3266360354 + 3266360355.

It is an arithmetic number, because the mean of its divisors is an integer number (3266360355).

Almost surely, 2^6532720709 is an apocalyptic number.

It is an amenable number.

6532720709 is a deficient number, since it is larger than the sum of its proper divisors (1).

6532720709 is an equidigital number, since it uses as much as digits as its factorization.

6532720709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 6532720709 is about 80825.2479674514. The cubic root of 6532720709 is about 1869.3818873728.

The spelling of 6532720709 in words is "six billion, five hundred thirty-two million, seven hundred twenty thousand, seven hundred nine".