6720560709 has 8 divisors (see below), whose sum is σ = 8963545920. Its totient is φ = 4478974656.

The previous prime is 6720560701. The next prime is 6720560723. The reversal of 6720560709 is 9070650276.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6720560709 - 2³ = 6720560701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720560701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338529 + ... + 357830.

It is an arithmetic number, because the mean of its divisors is an integer number (1120443240).

Almost surely, 2^6720560709 is an apocalyptic number.

It is an amenable number.

6720560709 is a deficient number, since it is larger than the sum of its proper divisors (2242985211).

6720560709 is a wasteful number, since it uses less digits than its factorization.

6720560709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699579.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 6720560709 is about 81979.0260310526. The cubic root of 6720560709 is about 1887.1300758549.

The spelling of 6720560709 in words is "six billion, seven hundred twenty million, five hundred sixty thousand, seven hundred nine".