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68011671 = 3713249127
BaseRepresentation
bin1000000110111…
…00011010010111
311201222100110210
410003130122113
5114402333141
610425420503
71454042520
oct403343227
9151870423
1068011671
11354331a2
121a93a733
13111237c0
149065847
155e86916
hex40dc697

68011671 has 16 divisors (see below), whose sum is σ = 111609344. Its totient is φ = 35874144.

The previous prime is 68011651. The next prime is 68011693. The reversal of 68011671 is 17611086.

It is a happy number.

It is not a de Polignac number, because 68011671 - 25 = 68011639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68011651) 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 15 ways as a sum of consecutive naturals, for example, 124291 + ... + 124836.

It is an arithmetic number, because the mean of its divisors is an integer number (6975584).

Almost surely, 268011671 is an apocalyptic number.

68011671 is a deficient number, since it is larger than the sum of its proper divisors (43597673).

68011671 is a wasteful number, since it uses less digits than its factorization.

68011671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249150.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 68011671 is about 8246.9188791936. The cubic root of 68011671 is about 408.1888603249.

The spelling of 68011671 in words is "sixty-eight million, eleven thousand, six hundred seventy-one".

Divisors: 1 3 7 13 21 39 91 273 249127 747381 1743889 3238651 5231667 9715953 22670557 68011671