6631672717 has 4 divisors (see below), whose sum is σ = 6632978400. Its totient is φ = 6630367036.

The previous prime is 6631672709. The next prime is 6631672739. The reversal of 6631672717 is 7172761366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6631672717 - 2³ = 6631672709 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 (6631672417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645193 + ... + 655390.

It is an arithmetic number, because the mean of its divisors is an integer number (1658244600).

Almost surely, 2^6631672717 is an apocalyptic number.

It is an amenable number.

6631672717 is a deficient number, since it is larger than the sum of its proper divisors (1305683).

6631672717 is a wasteful number, since it uses less digits than its factorization.

6631672717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305682.

The product of its digits is 444528, while the sum is 46.

The square root of 6631672717 is about 81435.0828390320. The cubic root of 6631672717 is about 1878.7732223045.

The spelling of 6631672717 in words is "six billion, six hundred thirty-one million, six hundred seventy-two thousand, seven hundred seventeen".