6815677643 has 4 divisors (see below), whose sum is σ = 7050701040. Its totient is φ = 6580654248.

The previous prime is 6815677613. The next prime is 6815677669. The reversal of 6815677643 is 3467765186.

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

It is not a de Polignac number, because 6815677643 - 2¹⁰ = 6815676619 is a prime.

It is a super-3 number, since 3×6815677643³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6815677613) 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, 117511655 + ... + 117511712.

It is an arithmetic number, because the mean of its divisors is an integer number (1762675260).

Almost surely, 2^6815677643 is an apocalyptic number.

6815677643 is a deficient number, since it is larger than the sum of its proper divisors (235023397).

6815677643 is a wasteful number, since it uses less digits than its factorization.

6815677643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235023396.

The product of its digits is 5080320, while the sum is 53.

The square root of 6815677643 is about 82557.1174581574. The cubic root of 6815677643 is about 1895.9913307174.

The spelling of 6815677643 in words is "six billion, eight hundred fifteen million, six hundred seventy-seven thousand, six hundred forty-three".