6858040 has 48 divisors (see below), whose sum is σ = 17955000. Its totient is φ = 2350656.

The previous prime is 6858017. The next prime is 6858043. The reversal of 6858040 is 408586.

6858040 = T₂₂₉ + T₂₃₀ + ... + T₃₇₅.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 6857993 and 6858011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6858043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211 + ... + 3709.

Almost surely, 2^6858040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6858040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8977500).

6858040 is an abundant number, since it is smaller than the sum of its proper divisors (11096960).

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

6858040 is a wasteful number, since it uses less digits than its factorization.

6858040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 6858040 is about 2618.7859782731. The cubic root of 6858040 is about 189.9911353205.

The spelling of 6858040 in words is "six million, eight hundred fifty-eight thousand, forty".