2720565656 has 8 divisors (see below), whose sum is σ = 5101060620. Its totient is φ = 1360282824.

The previous prime is 2720565643. The next prime is 2720565707. The reversal of 2720565656 is 6565650272.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170035346 + ... + 170035361.

Almost surely, 2^2720565656 is an apocalyptic number.

It is an amenable number.

2720565656 is a deficient number, since it is larger than the sum of its proper divisors (2380494964).

2720565656 is a wasteful number, since it uses less digits than its factorization.

2720565656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340070713 (or 340070709 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 44.

The square root of 2720565656 is about 52159.0419390541. The cubic root of 2720565656 is about 1396.0031677282.

The spelling of 2720565656 in words is "two billion, seven hundred twenty million, five hundred sixty-five thousand, six hundred fifty-six".