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68626065 = 3543106397
BaseRepresentation
bin1000001011100…
…10011010010001
311210010120021010
410011302122101
5120032013230
610450521133
71462211664
oct405623221
9153116233
1068626065
1135812862
121ab961a9
13112aa351
1491856db
1560589b0
hex4172691

68626065 has 16 divisors (see below), whose sum is σ = 112356288. Its totient is φ = 35749056.

The previous prime is 68626057. The next prime is 68626067. The reversal of 68626065 is 56062686.

It is not a de Polignac number, because 68626065 - 23 = 68626057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68626067) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52554 + ... + 53843.

It is an arithmetic number, because the mean of its divisors is an integer number (7022268).

Almost surely, 268626065 is an apocalyptic number.

It is an amenable number.

68626065 is a deficient number, since it is larger than the sum of its proper divisors (43730223).

68626065 is a wasteful number, since it uses less digits than its factorization.

68626065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106448.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 68626065 is about 8284.0850430207. The cubic root of 68626065 is about 409.4143233985.

The spelling of 68626065 in words is "sixty-eight million, six hundred twenty-six thousand, sixty-five".

Divisors: 1 3 5 15 43 129 215 645 106397 319191 531985 1595955 4575071 13725213 22875355 68626065