6718734221 has 8 divisors (see below), whose sum is σ = 6803011584. Its totient is φ = 6634805200.

The previous prime is 6718734193. The next prime is 6718734223. The reversal of 6718734221 is 1224378176.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6718734221 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 (6718734223) 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, 48161 + ... + 125526.

It is an arithmetic number, because the mean of its divisors is an integer number (850376448).

Almost surely, 2^6718734221 is an apocalyptic number.

It is an amenable number.

6718734221 is a deficient number, since it is larger than the sum of its proper divisors (84277363).

6718734221 is a wasteful number, since it uses less digits than its factorization.

6718734221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174171.

The product of its digits is 112896, while the sum is 41.

The square root of 6718734221 is about 81967.8853027208. The cubic root of 6718734221 is about 1886.9591013936.

The spelling of 6718734221 in words is "six billion, seven hundred eighteen million, seven hundred thirty-four thousand, two hundred twenty-one".