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68310207 = 3272347143
BaseRepresentation
bin1000001001001…
…01010010111111
311202112111222200
410010211102333
5114441411312
610440042543
71456425060
oct404452277
9152474880
1068310207
1135617519
121aa63453
13111c9654
149102567
155ee50dc
hex41254bf

68310207 has 24 divisors (see below), whose sum is σ = 117671424. Its totient is φ = 37336464.

The previous prime is 68310127. The next prime is 68310211. The reversal of 68310207 is 70201386.

It is not a de Polignac number, because 68310207 - 210 = 68309183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68310247) 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 23 ways as a sum of consecutive naturals, for example, 22123 + ... + 25020.

It is an arithmetic number, because the mean of its divisors is an integer number (4902976).

Almost surely, 268310207 is an apocalyptic number.

68310207 is a deficient number, since it is larger than the sum of its proper divisors (49361217).

68310207 is a wasteful number, since it uses less digits than its factorization.

68310207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47179 (or 47176 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 68310207 is about 8264.9989110707. The cubic root of 68310207 is about 408.7852344567.

The spelling of 68310207 in words is "sixty-eight million, three hundred ten thousand, two hundred seven".

Divisors: 1 3 7 9 21 23 63 69 161 207 483 1449 47143 141429 330001 424287 990003 1084289 2970009 3252867 7590023 9758601 22770069 68310207