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68013010 = 2513523177
BaseRepresentation
bin1000000110111…
…00101111010010
311201222102022101
410003130233102
5114402404020
610425431014
71454046442
oct403345722
9151872271
1068013010
11354341aa
121a93b46a
13111242b0
149066122
155e8700a
hex40dcbd2

68013010 has 16 divisors (see below), whose sum is σ = 131840856. Its totient is φ = 25112448.

The previous prime is 68012983. The next prime is 68013037. The reversal of 68013010 is 1031086.

It is a Cunningham number, because it is equal to 82472+1.

It is an interprime number because it is at equal distance from previous prime (68012983) and next prime (68013037).

It can be written as a sum of positive squares in 4 ways, for example, as 24492601 + 43520409 = 4949^2 + 6597^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 261459 + ... + 261718.

Almost surely, 268013010 is an apocalyptic number.

68013010 is a deficient number, since it is larger than the sum of its proper divisors (63827846).

68013010 is a wasteful number, since it uses less digits than its factorization.

68013010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523197.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 68013010 is about 8247.0000606281. Note that the first 4 decimals coincide. The cubic root of 68013010 is about 408.1915390872.

Adding to 68013010 its reverse (1031086), we get a palindrome (69044096).

The spelling of 68013010 in words is "sixty-eight million, thirteen thousand, ten".

Divisors: 1 2 5 10 13 26 65 130 523177 1046354 2615885 5231770 6801301 13602602 34006505 68013010