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68698071 = 33131729397
BaseRepresentation
bin1000001100000…
…11111111010111
311210021020001000
410012003333113
5120041314241
610452234343
71462631631
oct406037727
9153236030
1068698071
1135861972
121b00b9b3
1311304060
1491a3a51
15606eeb6
hex4183fd7

68698071 has 64 divisors (see below), whose sum is σ = 120355200. Its totient is φ = 38320128.

The previous prime is 68698051. The next prime is 68698073. The reversal of 68698071 is 17089686.

It is a happy number.

It is not a de Polignac number, because 68698071 - 25 = 68698039 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68698073) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172845 + ... + 173241.

It is an arithmetic number, because the mean of its divisors is an integer number (1880550).

Almost surely, 268698071 is an apocalyptic number.

68698071 is a deficient number, since it is larger than the sum of its proper divisors (51657129).

68698071 is a wasteful number, since it uses less digits than its factorization.

68698071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 68698071 is about 8288.4299478249. The cubic root of 68698071 is about 409.5574662070.

The spelling of 68698071 in words is "sixty-eight million, six hundred ninety-eight thousand, seventy-one".

Divisors: 1 3 9 13 17 27 29 39 51 87 117 153 221 261 351 377 397 459 493 663 783 1131 1191 1479 1989 3393 3573 4437 5161 5967 6409 6749 10179 10719 11513 13311 15483 19227 20247 34539 46449 57681 60741 87737 103617 139347 149669 173043 182223 195721 263211 310851 449007 587163 789633 1347021 1761489 2368899 2544373 4041063 5284467 7633119 22899357 68698071