2687768 has 16 divisors (see below), whose sum is σ = 5336280. Its totient is φ = 1264768.

The previous prime is 2687767. The next prime is 2687771. The reversal of 2687768 is 8677862.

It is a happy number.

It is a d-powerful number, because it can be written as 2¹⁶ + 6⁴ + 8² + 7⁶ + 7⁷ + 6⁸ + 8² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9746 + ... + 10017.

2^2687768 is an apocalyptic number.

It is an amenable number.

2687768 is a deficient number, since it is larger than the sum of its proper divisors (2648512).

2687768 is a wasteful number, since it uses less digits than its factorization.

2687768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19786 (or 19782 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 2687768 is about 1639.4413682715. The cubic root of 2687768 is about 139.0370654910.

The spelling of 2687768 in words is "two million, six hundred eighty-seven thousand, seven hundred sixty-eight".