6871522647 has 16 divisors (see below), whose sum is σ = 9998823168. Its totient is φ = 4162942080.

The previous prime is 6871522627. The next prime is 6871522681. The reversal of 6871522647 is 7462251786.

It is not a de Polignac number, because 6871522647 - 2¹⁸ = 6871260503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6871522596 and 6871522605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6871522627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48783 + ... + 126975.

It is an arithmetic number, because the mean of its divisors is an integer number (624926448).

Almost surely, 2^6871522647 is an apocalyptic number.

6871522647 is a deficient number, since it is larger than the sum of its proper divisors (3127300521).

6871522647 is a wasteful number, since it uses less digits than its factorization.

6871522647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80870.

The product of its digits is 1128960, while the sum is 48.

The square root of 6871522647 is about 82894.6478791001. The cubic root of 6871522647 is about 1901.1555894507.

The spelling of 6871522647 in words is "six billion, eight hundred seventy-one million, five hundred twenty-two thousand, six hundred forty-seven".