6691271771 has 8 divisors (see below), whose sum is σ = 6883242480. Its totient is φ = 6499886688.

The previous prime is 6691271759. The next prime is 6691271773. The reversal of 6691271771 is 1771721966.

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 6691271771 - 2⁶ = 6691271707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6691271773) 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, 123176 + ... + 168981.

It is an arithmetic number, because the mean of its divisors is an integer number (860405310).

Almost surely, 2^6691271771 is an apocalyptic number.

6691271771 is a deficient number, since it is larger than the sum of its proper divisors (191970709).

6691271771 is a wasteful number, since it uses less digits than its factorization.

6691271771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292813.

The product of its digits is 222264, while the sum is 47.

The square root of 6691271771 is about 81800.1941990360. The cubic root of 6691271771 is about 1884.3846439871.

The spelling of 6691271771 in words is "six billion, six hundred ninety-one million, two hundred seventy-one thousand, seven hundred seventy-one".