6611731671 has 4 divisors (see below), whose sum is σ = 8815642232. Its totient is φ = 4407821112.

The previous prime is 6611731657. The next prime is 6611731697. The reversal of 6611731671 is 1761371166.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6611731671 - 2¹⁵ = 6611698903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6611732671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101955276 + ... + 1101955281.

It is an arithmetic number, because the mean of its divisors is an integer number (2203910558).

Almost surely, 2^6611731671 is an apocalyptic number.

6611731671 is a deficient number, since it is larger than the sum of its proper divisors (2203910561).

6611731671 is a wasteful number, since it uses less digits than its factorization.

6611731671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203910560.

The product of its digits is 31752, while the sum is 39.

The square root of 6611731671 is about 81312.5554327251. Note that the first 3 decimals coincide. The cubic root of 6611731671 is about 1876.8882118360. Note that the first 3 decimals are identical.

The spelling of 6611731671 in words is "six billion, six hundred eleven million, seven hundred thirty-one thousand, six hundred seventy-one".