6871947653 has 2 divisors, whose sum is σ = 6871947654. Its totient is φ = 6871947652.

The previous prime is 6871947647. The next prime is 6871947673. The reversal of 6871947653 is 3567491786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5815892644 + 1056055009 = 76262^2 + 32497^2 .

It is a cyclic number.

It is not a de Polignac number, because 6871947653 - 2¹⁰ = 6871946629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6871947623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3435973826 + 3435973827.

It is an arithmetic number, because the mean of its divisors is an integer number (3435973827).

Almost surely, 2^6871947653 is an apocalyptic number.

It is an amenable number.

6871947653 is a deficient number, since it is larger than the sum of its proper divisors (1).

6871947653 is an equidigital number, since it uses as much as digits as its factorization.

6871947653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 6871947653 is about 82897.2113704677. The cubic root of 6871947653 is about 1901.1947843481.

The spelling of 6871947653 in words is "six billion, eight hundred seventy-one million, nine hundred forty-seven thousand, six hundred fifty-three".