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681714 = 232112313
BaseRepresentation
bin10100110011011110010
31021122010200
42212123302
5133303324
622340030
75536335
oct2463362
91248120
10681714
11426200
1228a616
131ab3a7
1413a61c
15d6ec9
hexa66f2

681714 has 36 divisors (see below), whose sum is σ = 1628718. Its totient is φ = 205920.

The previous prime is 681689. The next prime is 681719. The reversal of 681714 is 417186.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 680625 + 1089 = 825^2 + 33^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 681714.

It is not an unprimeable number, because it can be changed into a prime (681719) by changing a digit.

681714 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 17 ways as a sum of consecutive naturals, for example, 2022 + ... + 2334.

2681714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814359).

681714 is an abundant number, since it is smaller than the sum of its proper divisors (947004).

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

681714 is a wasteful number, since it uses less digits than its factorization.

681714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 329 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 681714 is about 825.6597362110. The cubic root of 681714 is about 88.0104154339.

The spelling of 681714 in words is "six hundred eighty-one thousand, seven hundred fourteen".