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6809608 = 2313411597
BaseRepresentation
bin11001111110100000001000
3110210222000201
4121332200020
53220401413
6401541544
7111611041
oct31764010
913728021
106809608
113931183
1223448b4
131545670
14c938c8
158e79dd
hex67e808

6809608 has 32 divisors (see below), whose sum is σ = 14094360. Its totient is φ = 3064320.

The previous prime is 6809597. The next prime is 6809611. The reversal of 6809608 is 8069086.

6809608 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1800964 + 5008644 = 1342^2 + 2238^2 .

It is a super-2 number, since 2×68096082 = 92741522227328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466 + ... + 5062.

Almost surely, 26809608 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 6809608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7047180).

6809608 is an abundant number, since it is smaller than the sum of its proper divisors (7284752).

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

6809608 is a wasteful number, since it uses less digits than its factorization.

6809608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 6809608 is about 2609.5225616959. The cubic root of 6809608 is about 189.5428343982.

The spelling of 6809608 in words is "six million, eight hundred nine thousand, six hundred eight".

Divisors: 1 2 4 8 13 26 41 52 82 104 164 328 533 1066 1597 2132 3194 4264 6388 12776 20761 41522 65477 83044 130954 166088 261908 523816 851201 1702402 3404804 6809608