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68137060 = 2253406853
BaseRepresentation
bin1000000111110…
…11000001100100
311202012201110211
410003323001210
5114420341220
610432225204
71455104215
oct403730144
9152181424
1068137060
1135509422
121a99b204
13111688b4
14909940c
155eadb5a
hex40fb064

68137060 has 12 divisors (see below), whose sum is σ = 143087868. Its totient is φ = 27254816.

The previous prime is 68137049. The next prime is 68137073. The reversal of 68137060 is 6073186.

It can be written as a sum of positive squares in 2 ways, for example, as 16842816 + 51294244 = 4104^2 + 7162^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703407 + ... + 1703446.

It is an arithmetic number, because the mean of its divisors is an integer number (11923989).

Almost surely, 268137060 is an apocalyptic number.

It is an amenable number.

68137060 is an abundant number, since it is smaller than the sum of its proper divisors (74950808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68137060 is a wasteful number, since it uses less digits than its factorization.

68137060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406862 (or 3406860 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 68137060 is about 8254.5175510141. The cubic root of 68137060 is about 408.4395573522.

The spelling of 68137060 in words is "sixty-eight million, one hundred thirty-seven thousand, sixty".

Divisors: 1 2 4 5 10 20 3406853 6813706 13627412 17034265 34068530 68137060