2686786788 has 24 divisors (see below), whose sum is σ = 7164764992. Its totient is φ = 767653344.

The previous prime is 2686786787. The next prime is 2686786807. The reversal of 2686786788 is 8876876862.

It is not an unprimeable number, because it can be changed into a prime (2686786787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15992695 + ... + 15992862.

Almost surely, 2^2686786788 is an apocalyptic number.

2686786788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2686786788 is an abundant number, since it is smaller than the sum of its proper divisors (4477978204).

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

2686786788 is a wasteful number, since it uses less digits than its factorization.

2686786788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31985571 (or 31985569 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 66.

The square root of 2686786788 is about 51834.2240995271. The cubic root of 2686786788 is about 1390.2014420885.

The spelling of 2686786788 in words is "two billion, six hundred eighty-six million, seven hundred eighty-six thousand, seven hundred eighty-eight".