6885090 has 48 divisors (see below), whose sum is σ = 18086328. Its totient is φ = 1817088.

The previous prime is 6885041. The next prime is 6885091. The reversal of 6885090 is 905886.

It can be written as a sum of positive squares in 4 ways, for example, as 5659641 + 1225449 = 2379^2 + 1107^2 .

It is not an unprimeable number, because it can be changed into a prime (6885091) 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 23 ways as a sum of consecutive naturals, for example, 9832 + ... + 10508.

Almost surely, 2^6885090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6885090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9043164).

6885090 is an abundant number, since it is smaller than the sum of its proper divisors (11201238).

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

6885090 is a wasteful number, since it uses less digits than its factorization.

6885090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 6885090 is about 2623.9455024829. The cubic root of 6885090 is about 190.2406000894.

It can be divided in two parts, 688 and 5090, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 6885090 in words is "six million, eight hundred eighty-five thousand, ninety".