2656808648 has 16 divisors (see below), whose sum is σ = 5364709980. Its totient is φ = 1226219328.

The previous prime is 2656808641. The next prime is 2656808731. The reversal of 2656808648 is 8468086562.

It can be written as a sum of positive squares in 2 ways, for example, as 2656165444 + 643204 = 51538^2 + 802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2656808648.

It is not an unprimeable number, because it can be changed into a prime (2656808641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12773015 + ... + 12773222.

Almost surely, 2^2656808648 is an apocalyptic number.

It is an amenable number.

2656808648 is an abundant number, since it is smaller than the sum of its proper divisors (2707901332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2656808648 is a wasteful number, since it uses less digits than its factorization.

2656808648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25546256 (or 25546252 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 53.

The square root of 2656808648 is about 51544.2397169655. The cubic root of 2656808648 is about 1385.0116466067.

The spelling of 2656808648 in words is "two billion, six hundred fifty-six million, eight hundred eight thousand, six hundred forty-eight".