6858420 has 48 divisors (see below), whose sum is σ = 19356288. Its totient is φ = 1814400.

The previous prime is 6858407. The next prime is 6858427. The reversal of 6858420 is 248586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6858427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8682 + ... + 9438.

It is an arithmetic number, because the mean of its divisors is an integer number (403256).

Almost surely, 2^6858420 is an apocalyptic number.

6858420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6858420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9678144).

6858420 is an abundant number, since it is smaller than the sum of its proper divisors (12497868).

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

6858420 is a wasteful number, since it uses less digits than its factorization.

6858420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 6858420 is about 2618.8585299706. The cubic root of 6858420 is about 189.9946443550.

The spelling of 6858420 in words is "six million, eight hundred fifty-eight thousand, four hundred twenty".