2689881608 has 8 divisors (see below), whose sum is σ = 5043528030. Its totient is φ = 1344940800.

The previous prime is 2689881577. The next prime is 2689881619. The reversal of 2689881608 is 8061889862.

It can be written as a sum of positive squares in only one way, i.e., 2454013444 + 235868164 = 49538^2 + 15358^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168117593 + ... + 168117608.

Almost surely, 2^2689881608 is an apocalyptic number.

It is an amenable number.

2689881608 is a deficient number, since it is larger than the sum of its proper divisors (2353646422).

2689881608 is a wasteful number, since it uses less digits than its factorization.

2689881608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336235207 (or 336235203 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 56.

The square root of 2689881608 is about 51864.0685638911. The cubic root of 2689881608 is about 1390.7350128161.

The spelling of 2689881608 in words is "two billion, six hundred eighty-nine million, eight hundred eighty-one thousand, six hundred eight".