2688662812 has 48 divisors (see below), whose sum is σ = 5474716128. Its totient is φ = 1141790720.

The previous prime is 2688662807. The next prime is 2688662843. The reversal of 2688662812 is 2182668862.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89358 + ... + 115594.

It is an arithmetic number, because the mean of its divisors is an integer number (114056586).

Almost surely, 2^2688662812 is an apocalyptic number.

2688662812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2688662812 is an abundant number, since it is smaller than the sum of its proper divisors (2786053316).

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

2688662812 is a wasteful number, since it uses less digits than its factorization.

2688662812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26406 (or 26404 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The square root of 2688662812 is about 51852.3173252652. The cubic root of 2688662812 is about 1390.5249319044.

It can be divided in two parts, 26886 and 62812, that added together give a palindrome (89698).

The spelling of 2688662812 in words is "two billion, six hundred eighty-eight million, six hundred sixty-two thousand, eight hundred twelve".