2688602644 has 48 divisors (see below), whose sum is σ = 5990544000. Its totient is φ = 1026942336.

The previous prime is 2688602621. The next prime is 2688602659. The reversal of 2688602644 is 4462068862.

It is a junction number, because it is equal to n+sod(n) for n = 2688602594 and 2688602603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116794 + ... + 137905.

It is an arithmetic number, because the mean of its divisors is an integer number (124803000).

Almost surely, 2^2688602644 is an apocalyptic number.

It is an amenable number.

2688602644 is an abundant number, since it is smaller than the sum of its proper divisors (3301941356).

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

2688602644 is a wasteful number, since it uses less digits than its factorization.

2688602644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254752 (or 254750 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 46.

The square root of 2688602644 is about 51851.7371357990. The cubic root of 2688602644 is about 1390.5145592478.

The spelling of 2688602644 in words is "two billion, six hundred eighty-eight million, six hundred two thousand, six hundred forty-four".