6887863 has 2 divisors, whose sum is σ = 6887864. Its totient is φ = 6887862.

The previous prime is 6887851. The next prime is 6887893. The reversal of 6887863 is 3687886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6887863 - 2⁵ = 6887831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6887813) 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 as a sum of consecutive naturals, namely, 3443931 + 3443932.

It is an arithmetic number, because the mean of its divisors is an integer number (3443932).

Almost surely, 2^6887863 is an apocalyptic number.

6887863 is a deficient number, since it is larger than the sum of its proper divisors (1).

6887863 is an equidigital number, since it uses as much as digits as its factorization.

6887863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 6887863 is about 2624.4738520321. The cubic root of 6887863 is about 190.2661367383.

It can be divided in two parts, 6887 and 863, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 6887863 in words is "six million, eight hundred eighty-seven thousand, eight hundred sixty-three".