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68286395 = 513657279
BaseRepresentation
bin1000001000111…
…11011110111011
311202111022022202
410010133132323
5114440131040
610435340415
71456265462
oct404373673
9152438282
1068286395
1135600641
121aa5170b
13111bb868
1490d79d9
155edd015
hex411f7bb

68286395 has 4 divisors (see below), whose sum is σ = 81943680. Its totient is φ = 54629112.

The previous prime is 68286377. The next prime is 68286409. The reversal of 68286395 is 59368286.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68286395 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6828635 + ... + 6828644.

It is an arithmetic number, because the mean of its divisors is an integer number (20485920).

Almost surely, 268286395 is an apocalyptic number.

68286395 is a deficient number, since it is larger than the sum of its proper divisors (13657285).

68286395 is a wasteful number, since it uses less digits than its factorization.

68286395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13657284.

The product of its digits is 622080, while the sum is 47.

The square root of 68286395 is about 8263.5582529562. The cubic root of 68286395 is about 408.7377299636.

The spelling of 68286395 in words is "sixty-eight million, two hundred eighty-six thousand, three hundred ninety-five".

Divisors: 1 5 13657279 68286395