6871428647 has 4 divisors (see below), whose sum is σ = 6939462696. Its totient is φ = 6803394600.

The previous prime is 6871428637. The next prime is 6871428667. The reversal of 6871428647 is 7468241786.

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 6871428647 - 2⁶ = 6871428583 is a prime.

It is a super-3 number, since 3×6871428647³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6871428637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34016873 + ... + 34017074.

It is an arithmetic number, because the mean of its divisors is an integer number (1734865674).

Almost surely, 2^6871428647 is an apocalyptic number.

6871428647 is a deficient number, since it is larger than the sum of its proper divisors (68034049).

6871428647 is a wasteful number, since it uses less digits than its factorization.

6871428647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68034048.

The product of its digits is 3612672, while the sum is 53.

The square root of 6871428647 is about 82894.0808924256. The cubic root of 6871428647 is about 1901.1469203658.

The spelling of 6871428647 in words is "six billion, eight hundred seventy-one million, four hundred twenty-eight thousand, six hundred forty-seven".