6889890 has 96 divisors (see below), whose sum is σ = 19863360. Its totient is φ = 1524096.

The previous prime is 6889873. The next prime is 6889891. The reversal of 6889890 is 989886.

It is not an unprimeable number, because it can be changed into a prime (6889891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63156 + ... + 63264.

It is an arithmetic number, because the mean of its divisors is an integer number (206910).

Almost surely, 2^6889890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6889890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9931680).

6889890 is an abundant number, since it is smaller than the sum of its proper divisors (12973470).

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

6889890 is a wasteful number, since it uses less digits than its factorization.

6889890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 6889890 is about 2624.8599962665. The cubic root of 6889890 is about 190.2847991126.

The spelling of 6889890 in words is "six million, eight hundred eighty-nine thousand, eight hundred ninety".