2681887 has 4 divisors (see below), whose sum is σ = 2888200. Its totient is φ = 2475576.

The previous prime is 2681881. The next prime is 2681893. The reversal of 2681887 is 7881862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7881862 = 2 ⋅3940931.

It is an interprime number because it is at equal distance from previous prime (2681881) and next prime (2681893).

It is a cyclic number.

It is not a de Polignac number, because 2681887 - 2³ = 2681879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103137 + ... + 103162.

It is an arithmetic number, because the mean of its divisors is an integer number (722050).

2^2681887 is an apocalyptic number.

2681887 is a deficient number, since it is larger than the sum of its proper divisors (206313).

2681887 is a wasteful number, since it uses less digits than its factorization.

2681887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206312.

The product of its digits is 43008, while the sum is 40.

The square root of 2681887 is about 1637.6467873140. The cubic root of 2681887 is about 138.9355842515.

The spelling of 2681887 in words is "two million, six hundred eighty-one thousand, eight hundred eighty-seven".