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68104071 = 347217159
BaseRepresentation
bin1000000111100…
…10111110000111
311202011001020000
410003302332013
5114413312241
610431412343
71454606100
oct403627607
9152131200
1068104071
1135496662
121a9840b3
1311156889
14908b3a7
155ea3eb6
hex40f2f87

68104071 has 30 divisors (see below), whose sum is σ = 118352520. Its totient is φ = 38914344.

The previous prime is 68104063. The next prime is 68104079. The reversal of 68104071 is 17040186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68104063) and next prime (68104079).

It is not a de Polignac number, because 68104071 - 23 = 68104063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68104079) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4611 + ... + 12548.

It is an arithmetic number, because the mean of its divisors is an integer number (3945084).

Almost surely, 268104071 is an apocalyptic number.

68104071 is a deficient number, since it is larger than the sum of its proper divisors (50248449).

68104071 is a wasteful number, since it uses less digits than its factorization.

68104071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17185 (or 17169 counting only the distinct ones).

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

The square root of 68104071 is about 8252.5190699568. The cubic root of 68104071 is about 408.3736304902.

The spelling of 68104071 in words is "sixty-eight million, one hundred four thousand, seventy-one".

Divisors: 1 3 7 9 21 27 49 63 81 147 189 441 567 1323 3969 17159 51477 120113 154431 360339 463293 840791 1081017 1389879 2522373 3243051 7567119 9729153 22701357 68104071