2686887 has 12 divisors (see below), whose sum is σ = 4435600. Its totient is φ = 1535328.

The previous prime is 2686861. The next prime is 2686889. The reversal of 2686887 is 7886862.

It is not a de Polignac number, because 2686887 - 2⁷ = 2686759 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 6 + 8⁶ + 6⁶ + 8⁶ + 8⁷ + 7⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686889) 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, 21262 + ... + 21387.

2^2686887 is an apocalyptic number.

2686887 is a deficient number, since it is larger than the sum of its proper divisors (1748713).

2686887 is a wasteful number, since it uses less digits than its factorization.

2686887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42662 (or 42659 counting only the distinct ones).

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

The square root of 2686887 is about 1639.1726571658. The cubic root of 2686887 is about 139.0218725824.

The spelling of 2686887 in words is "two million, six hundred eighty-six thousand, eight hundred eighty-seven".