6887887 has 4 divisors (see below), whose sum is σ = 6896176. Its totient is φ = 6879600.

The previous prime is 6887863. The next prime is 6887893. The reversal of 6887887 is 7887886.

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 6887887 - 2⁷ = 6887759 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 (6887807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2739 + ... + 4612.

It is an arithmetic number, because the mean of its divisors is an integer number (1724044).

Almost surely, 2^6887887 is an apocalyptic number.

6887887 is a deficient number, since it is larger than the sum of its proper divisors (8289).

6887887 is an equidigital number, since it uses as much as digits as its factorization.

6887887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288.

The product of its digits is 1204224, while the sum is 52.

The square root of 6887887 is about 2624.4784243731. The cubic root of 6887887 is about 190.2663577251.

Subtracting 6887887 from its reverse (7887886), we obtain a palindrome (999999).

The spelling of 6887887 in words is "six million, eight hundred eighty-seven thousand, eight hundred eighty-seven".