6871644536 has 8 divisors (see below), whose sum is σ = 12884333520. Its totient is φ = 3435822264.

The previous prime is 6871644529. The next prime is 6871644581. The reversal of 6871644536 is 6354461786.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429477776 + ... + 429477791.

It is an arithmetic number, because the mean of its divisors is an integer number (1610541690).

Almost surely, 2^6871644536 is an apocalyptic number.

It is an amenable number.

6871644536 is a deficient number, since it is larger than the sum of its proper divisors (6012688984).

6871644536 is a wasteful number, since it uses less digits than its factorization.

6871644536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858955573 (or 858955569 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 6871644536 is about 82895.3830801209. The cubic root of 6871644536 is about 1901.1668304616.

The spelling of 6871644536 in words is "six billion, eight hundred seventy-one million, six hundred forty-four thousand, five hundred thirty-six".