6856140 has 24 divisors (see below), whose sum is σ = 19197360. Its totient is φ = 1828288.

The previous prime is 6856127. The next prime is 6856141. The reversal of 6856140 is 416586.

6856140 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6856098 and 6856107.

It is not an unprimeable number, because it can be changed into a prime (6856141) 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, 57075 + ... + 57194.

It is an arithmetic number, because the mean of its divisors is an integer number (799890).

Almost surely, 2^6856140 is an apocalyptic number.

6856140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6856140 is an abundant number, since it is smaller than the sum of its proper divisors (12341220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6856140 is a wasteful number, since it uses less digits than its factorization.

6856140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114281 (or 114279 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 6856140 is about 2618.4231896315. The cubic root of 6856140 is about 189.9735882031.

It can be divided in two parts, 6856 and 140, that added together give a palindrome (6996).

The spelling of 6856140 in words is "six million, eight hundred fifty-six thousand, one hundred forty".