6800857 has 6 divisors (see below), whose sum is σ = 7911258. Its totient is φ = 5829264.

The previous prime is 6800839. The next prime is 6800861. The reversal of 6800857 is 7580086.

It can be written as a sum of positive squares in only one way, i.e., 5934096 + 866761 = 2436^2 + 931^2 .

It is not a de Polignac number, because 6800857 - 2¹¹ = 6798809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6800257) 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, 69348 + ... + 69445.

It is an arithmetic number, because the mean of its divisors is an integer number (1318543).

Almost surely, 2^6800857 is an apocalyptic number.

It is an amenable number.

6800857 is a deficient number, since it is larger than the sum of its proper divisors (1110401).

6800857 is a wasteful number, since it uses less digits than its factorization.

6800857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138807 (or 138800 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 6800857 is about 2607.8452791529. The cubic root of 6800857 is about 189.4616060134.

The spelling of 6800857 in words is "six million, eight hundred thousand, eight hundred fifty-seven".