6681234517 has 4 divisors (see below), whose sum is σ = 6794475840. Its totient is φ = 6567993196.

The previous prime is 6681234509. The next prime is 6681234523. The reversal of 6681234517 is 7154321866.

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 6681234517 - 2³ = 6681234509 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 (6681234017) 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, 56620573 + ... + 56620690.

It is an arithmetic number, because the mean of its divisors is an integer number (1698618960).

Almost surely, 2^6681234517 is an apocalyptic number.

It is an amenable number.

6681234517 is a deficient number, since it is larger than the sum of its proper divisors (113241323).

6681234517 is a wasteful number, since it uses less digits than its factorization.

6681234517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113241322.

The product of its digits is 241920, while the sum is 43.

The square root of 6681234517 is about 81738.8189112126. The cubic root of 6681234517 is about 1883.4419476312.

The spelling of 6681234517 in words is "six billion, six hundred eighty-one million, two hundred thirty-four thousand, five hundred seventeen".