2686788 has 36 divisors (see below), whose sum is σ = 7315308. Its totient is φ = 826560.

The previous prime is 2686787. The next prime is 2686811. The reversal of 2686788 is 8876862.

It can be written as a sum of positive squares in 2 ways, for example, as 831744 + 1855044 = 912^2 + 1362^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2686781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2403 + ... + 3338.

It is an arithmetic number, because the mean of its divisors is an integer number (203203).

2^2686788 is an apocalyptic number.

It is an amenable number.

2686788 is an abundant number, since it is smaller than the sum of its proper divisors (4628520).

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

2686788 is a wasteful number, since it uses less digits than its factorization.

2686788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764 (or 5759 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 2686788 is about 1639.1424587265. The cubic root of 2686788 is about 139.0201651127.

It can be divided in two parts, 268 and 6788, that added together give a square (7056 = 84²).

The spelling of 2686788 in words is "two million, six hundred eighty-six thousand, seven hundred eighty-eight".