6806858789 has 6 divisors (see below), whose sum is σ = 6920279730. Its totient is φ = 6695267280.

The previous prime is 6806858783. The next prime is 6806858797. The reversal of 6806858789 is 9878586086.

It can be written as a sum of positive squares in 3 ways, for example, as 125104225 + 6681754564 = 11185^2 + 81742^2 .

It is not a de Polignac number, because 6806858789 - 2²⁰ = 6805810213 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 (6806858783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 910934 + ... + 918375.

It is an arithmetic number, because the mean of its divisors is an integer number (1153379955).

Almost surely, 2^6806858789 is an apocalyptic number.

It is an amenable number.

6806858789 is a deficient number, since it is larger than the sum of its proper divisors (113420941).

6806858789 is an equidigital number, since it uses as much as digits as its factorization.

6806858789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829431 (or 1829370 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 65.

The square root of 6806858789 is about 82503.6895478014. The cubic root of 6806858789 is about 1895.1732321915.

The spelling of 6806858789 in words is "six billion, eight hundred six million, eight hundred fifty-eight thousand, seven hundred eighty-nine".