6858522 has 72 divisors (see below), whose sum is σ = 16930368. Its totient is φ = 2003760.

The previous prime is 6858517. The next prime is 6858581. The reversal of 6858522 is 2258586.

6858522 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 14.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 102333 + ... + 102399.

It is an arithmetic number, because the mean of its divisors is an integer number (235144).

Almost surely, 2^6858522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6858522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8465184).

6858522 is an abundant number, since it is smaller than the sum of its proper divisors (10071846).

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

6858522 is a wasteful number, since it uses less digits than its factorization.

6858522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 130 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 6858522 is about 2618.8780040315. The cubic root of 6858522 is about 189.9955862317.

The spelling of 6858522 in words is "six million, eight hundred fifty-eight thousand, five hundred twenty-two".