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67060705 = 5121311057
BaseRepresentation
bin1111111111010…
…0001111100001
311200012000222211
43333310033201
5114131420310
610353202121
71443002155
oct377641741
9150160884
1067060705
1134943778
121a560341
1310b7c9ba
148c99065
155d49c8a
hex3ff43e1

67060705 has 8 divisors (see below), whose sum is σ = 80546472. Its totient is φ = 53599488.

The previous prime is 67060703. The next prime is 67060711. The reversal of 67060705 is 50706076.

It can be written as a sum of positive squares in 4 ways, for example, as 1272384 + 65788321 = 1128^2 + 8111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67060705 - 21 = 67060703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67060703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537 + ... + 11593.

It is an arithmetic number, because the mean of its divisors is an integer number (10068309).

Almost surely, 267060705 is an apocalyptic number.

It is an amenable number.

67060705 is a deficient number, since it is larger than the sum of its proper divisors (13485767).

67060705 is a wasteful number, since it uses less digits than its factorization.

67060705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12275.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 67060705 is about 8189.0600803755. The cubic root of 67060705 is about 406.2774378312.

The spelling of 67060705 in words is "sixty-seven million, sixty thousand, seven hundred five".

Divisors: 1 5 1213 6065 11057 55285 13412141 67060705