6871663 has 4 divisors (see below), whose sum is σ = 6882408. Its totient is φ = 6860920.

The previous prime is 6871661. The next prime is 6871679. The reversal of 6871663 is 3661786.

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 6871663 - 2¹ = 6871661 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 (6871661) 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, 4348 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1720602).

Almost surely, 2^6871663 is an apocalyptic number.

6871663 is a deficient number, since it is larger than the sum of its proper divisors (10745).

6871663 is a wasteful number, since it uses less digits than its factorization.

6871663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10744.

The product of its digits is 36288, while the sum is 37.

The square root of 6871663 is about 2621.3857022575. The cubic root of 6871663 is about 190.1168533262.

The spelling of 6871663 in words is "six million, eight hundred seventy-one thousand, six hundred sixty-three".