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68316969 = 3723141443
BaseRepresentation
bin1000001001001…
…10111100101001
311202112212021010
410010212330221
5114442120334
610440134133
71456453560
oct404467451
9152485233
1068316969
1135621606
121aa67349
13111cc756
149104bd7
155ee70e9
hex4126f29

68316969 has 16 divisors (see below), whose sum is σ = 108628992. Its totient is φ = 37340688.

The previous prime is 68316959. The next prime is 68317009. The reversal of 68316969 is 96961386.

It is not a de Polignac number, because 68316969 - 28 = 68316713 is a prime.

It is a super-2 number, since 2×683169692 = 9334416506693922, which contains 22 as substring.

68316969 is a modest number, since divided by 6969 gives 6831 as remainder.

It is not an unprimeable number, because it can be changed into a prime (68316959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70239 + ... + 71204.

It is an arithmetic number, because the mean of its divisors is an integer number (6789312).

Almost surely, 268316969 is an apocalyptic number.

68316969 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

68316969 is a deficient number, since it is larger than the sum of its proper divisors (40312023).

68316969 is a wasteful number, since it uses less digits than its factorization.

68316969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141476.

The product of its digits is 419904, while the sum is 48.

The square root of 68316969 is about 8265.4079754117. The cubic root of 68316969 is about 408.7987225072.

The spelling of 68316969 in words is "sixty-eight million, three hundred sixteen thousand, nine hundred sixty-nine".

Divisors: 1 3 7 21 23 69 161 483 141443 424329 990101 2970303 3253189 9759567 22772323 68316969