6887071 has 4 divisors (see below), whose sum is σ = 6984144. Its totient is φ = 6790000.

The previous prime is 6887059. The next prime is 6887077. The reversal of 6887071 is 1707886.

It is a happy number.

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 6887071 - 2¹¹ = 6885023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6887071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887077) 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, 48430 + ... + 48571.

It is an arithmetic number, because the mean of its divisors is an integer number (1746036).

Almost surely, 2^6887071 is an apocalyptic number.

6887071 is a deficient number, since it is larger than the sum of its proper divisors (97073).

6887071 is an equidigital number, since it uses as much as digits as its factorization.

6887071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97072.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 6887071 is about 2624.3229603080. The cubic root of 6887071 is about 190.2588438834.

The spelling of 6887071 in words is "six million, eight hundred eighty-seven thousand, seventy-one".