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6809706 = 232378317
BaseRepresentation
bin11001111110100001101010
3110210222011100
4121332201222
53220402311
6401542230
7111611241
oct31764152
913728140
106809706
113931262
122344976
131545717
14c93958
158e7a56
hex67e86a

6809706 has 12 divisors (see below), whose sum is σ = 14754402. Its totient is φ = 2269896.

The previous prime is 6809701. The next prime is 6809713. The reversal of 6809706 is 6079086.

It can be written as a sum of positive squares in only one way, i.e., 5688225 + 1121481 = 2385^2 + 1059^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6809701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189141 + ... + 189176.

Almost surely, 26809706 is an apocalyptic number.

6809706 is an abundant number, since it is smaller than the sum of its proper divisors (7944696).

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

6809706 is a wasteful number, since it uses less digits than its factorization.

6809706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378325 (or 378322 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 6809706 is about 2609.5413390096. The cubic root of 6809706 is about 189.5437436580.

The spelling of 6809706 in words is "six million, eight hundred nine thousand, seven hundred six".

Divisors: 1 2 3 6 9 18 378317 756634 1134951 2269902 3404853 6809706