6891934771 has 8 divisors (see below), whose sum is σ = 7255566080. Its totient is φ = 6528393288.

The previous prime is 6891934769. The next prime is 6891934783. The reversal of 6891934771 is 1774391986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6891934771 - 2¹ = 6891934769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6891934171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183610 + ... + 217936.

It is an arithmetic number, because the mean of its divisors is an integer number (906945760).

Almost surely, 2^6891934771 is an apocalyptic number.

6891934771 is a deficient number, since it is larger than the sum of its proper divisors (363631309).

6891934771 is a wasteful number, since it uses less digits than its factorization.

6891934771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44913.

The product of its digits is 2286144, while the sum is 55.

The square root of 6891934771 is about 83017.6774608878. The cubic root of 6891934771 is about 1903.0362139444.

The spelling of 6891934771 in words is "six billion, eight hundred ninety-one million, nine hundred thirty-four thousand, seven hundred seventy-one".