5681887 has 4 divisors (see below), whose sum is σ = 5704776. Its totient is φ = 5659000.

The previous prime is 5681869. The next prime is 5681899. The reversal of 5681887 is 7881865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5681887 - 2¹⁹ = 5157599 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 (5685887) 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, 11068 + ... + 11569.

It is an arithmetic number, because the mean of its divisors is an integer number (1426194).

Almost surely, 2^5681887 is an apocalyptic number.

5681887 is a deficient number, since it is larger than the sum of its proper divisors (22889).

5681887 is a wasteful number, since it uses less digits than its factorization.

5681887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888.

The product of its digits is 107520, while the sum is 43.

The square root of 5681887 is about 2383.6709084939. The cubic root of 5681887 is about 178.4421843007.

The spelling of 5681887 in words is "five million, six hundred eighty-one thousand, eight hundred eighty-seven".