2688578316 has 72 divisors (see below), whose sum is σ = 6966435840. Its totient is φ = 873978336.

The previous prime is 2688578297. The next prime is 2688578351. The reversal of 2688578316 is 6138758862.

2688578316 is a `hidden beast` number, since 2 + 68 + 8 + 578 + 3 + 1 + 6 = 666.

It is a super-2 number, since 2×2688578316² = 14456906722530791712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264765 + ... + 274731.

Almost surely, 2^2688578316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2688578316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3483217920).

2688578316 is an abundant number, since it is smaller than the sum of its proper divisors (4277857524).

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

2688578316 is a wasteful number, since it uses less digits than its factorization.

2688578316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10163 (or 10158 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 2688578316 is about 51851.5025433208. The cubic root of 2688578316 is about 1390.5103651806.

The spelling of 2688578316 in words is "two billion, six hundred eighty-eight million, five hundred seventy-eight thousand, three hundred sixteen".