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69968587 = 136917789
BaseRepresentation
bin1000010101110…
…10001011001011
311212122202212011
410022322023023
5120402443322
610535400351
71506503023
oct412721313
9155582764
1069968587
113654a487
121b5230b7
131165a440
149414a83
156221677
hex42ba2cb

69968587 has 8 divisors (see below), whose sum is σ = 75469520. Its totient is φ = 64484640.

The previous prime is 69968579. The next prime is 69968597. The reversal of 69968587 is 78586996.

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 69968587 - 23 = 69968579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69968537) by changing a digit.

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, 5089 + ... + 12877.

It is an arithmetic number, because the mean of its divisors is an integer number (9433690).

Almost surely, 269968587 is an apocalyptic number.

69968587 is a deficient number, since it is larger than the sum of its proper divisors (5500933).

69968587 is a wasteful number, since it uses less digits than its factorization.

69968587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8493.

The product of its digits is 6531840, while the sum is 58.

The square root of 69968587 is about 8364.7227688669. The cubic root of 69968587 is about 412.0668722163.

The spelling of 69968587 in words is "sixty-nine million, nine hundred sixty-eight thousand, five hundred eighty-seven".

Divisors: 1 13 691 7789 8983 101257 5382199 69968587