2720720757 has 8 divisors (see below), whose sum is σ = 3628300000. Its totient is φ = 1813477680.

The previous prime is 2720720707. The next prime is 2720720767. The reversal of 2720720757 is 7570270272.

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

It is not a de Polignac number, because 2720720757 - 2⁶ = 2720720693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720720707) by changing a digit.

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, 64507 + ... + 97992.

It is an arithmetic number, because the mean of its divisors is an integer number (453537500).

Almost surely, 2^2720720757 is an apocalyptic number.

It is an amenable number.

2720720757 is a deficient number, since it is larger than the sum of its proper divisors (907579243).

2720720757 is a wasteful number, since it uses less digits than its factorization.

2720720757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168083.

The product of its (nonzero) digits is 96040, while the sum is 39.

The square root of 2720720757 is about 52160.5287262313. The cubic root of 2720720757 is about 1396.0296962030.

The spelling of 2720720757 in words is "two billion, seven hundred twenty million, seven hundred twenty thousand, seven hundred fifty-seven".