2720565685 has 16 divisors (see below), whose sum is σ = 3293236800. Its totient is φ = 2157463296.

The previous prime is 2720565643. The next prime is 2720565707. The reversal of 2720565685 is 5865650272.

It is a cyclic number.

It is not a de Polignac number, because 2720565685 - 2¹³ = 2720557493 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 510957 + ... + 516253.

It is an arithmetic number, because the mean of its divisors is an integer number (205827300).

Almost surely, 2^2720565685 is an apocalyptic number.

It is an amenable number.

2720565685 is a deficient number, since it is larger than the sum of its proper divisors (572671115).

2720565685 is a wasteful number, since it uses less digits than its factorization.

2720565685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The square root of 2720565685 is about 52159.0422170500. The cubic root of 2720565685 is about 1396.0031726884.

The spelling of 2720565685 in words is "two billion, seven hundred twenty million, five hundred sixty-five thousand, six hundred eighty-five".