6718432885 has 4 divisors (see below), whose sum is σ = 8062119468. Its totient is φ = 5374746304.

The previous prime is 6718432873. The next prime is 6718432901. The reversal of 6718432885 is 5882348176.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1002165649 + 5716267236 = 31657^2 + 75606^2 .

It is a cyclic number.

It is not a de Polignac number, because 6718432885 - 2¹⁷ = 6718301813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671843284 + ... + 671843293.

It is an arithmetic number, because the mean of its divisors is an integer number (2015529867).

Almost surely, 2^6718432885 is an apocalyptic number.

It is an amenable number.

6718432885 is a deficient number, since it is larger than the sum of its proper divisors (1343686583).

6718432885 is a wasteful number, since it uses less digits than its factorization.

6718432885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343686582.

The product of its digits is 2580480, while the sum is 52.

The square root of 6718432885 is about 81966.0471475842. The cubic root of 6718432885 is about 1886.9308908612.

The spelling of 6718432885 in words is "six billion, seven hundred eighteen million, four hundred thirty-two thousand, eight hundred eighty-five".