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68170 = 2517401
BaseRepresentation
bin10000101001001010
310110111211
4100221022
54140140
61243334
7402514
oct205112
9113454
1068170
1147243
123354a
132504b
141abb4
15152ea
hex10a4a

68170 has 16 divisors (see below), whose sum is σ = 130248. Its totient is φ = 25600.

The previous prime is 68161. The next prime is 68171. The reversal of 68170 is 7186.

It can be written as a sum of positive squares in 4 ways, for example, as 68121 + 49 = 261^2 + 7^2 .

It is not an unprimeable number, because it can be changed into a prime (68171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31 + ... + 370.

268170 is an apocalyptic number.

68170 is a deficient number, since it is larger than the sum of its proper divisors (62078).

68170 is a wasteful number, since it uses less digits than its factorization.

68170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 68170 is about 261.0938528576. The cubic root of 68170 is about 40.8505365062.

The spelling of 68170 in words is "sixty-eight thousand, one hundred seventy".

Divisors: 1 2 5 10 17 34 85 170 401 802 2005 4010 6817 13634 34085 68170