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68363137 = 17137149197
BaseRepresentation
bin1000001001100…
…10001110000001
311202122012121001
410010302032001
5120000110022
610441132001
71460035303
oct404621601
9152565531
1068363137
1135653267
121aa8a001
131121777b
149117973
156005b27
hex4132381

68363137 has 16 divisors (see below), whose sum is σ = 73774800. Its totient is φ = 63121408.

The previous prime is 68363129. The next prime is 68363173. The reversal of 68363137 is 73136386.

It can be written as a sum of positive squares in 8 ways, for example, as 5779216 + 62583921 = 2404^2 + 7911^2 .

It is not a de Polignac number, because 68363137 - 23 = 68363129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68363096 and 68363105.

It is not an unprimeable number, because it can be changed into a prime (68363177) 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, 346923 + ... + 347119.

It is an arithmetic number, because the mean of its divisors is an integer number (4610925).

Almost surely, 268363137 is an apocalyptic number.

It is an amenable number.

68363137 is a deficient number, since it is larger than the sum of its proper divisors (5411663).

68363137 is a wasteful number, since it uses less digits than its factorization.

68363137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its digits is 54432, while the sum is 37.

The square root of 68363137 is about 8268.2003483225. The cubic root of 68363137 is about 408.8907892845.

The spelling of 68363137 in words is "sixty-eight million, three hundred sixty-three thousand, one hundred thirty-seven".

Divisors: 1 17 137 149 197 2329 2533 3349 20413 26989 29353 347021 458813 499001 4021361 68363137