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68901679 = 7113732399
BaseRepresentation
bin1000001101101…
…01101100101111
311210122120100001
410012311230233
5120114323204
610500445131
71464440350
oct406655457
9153576301
1068901679
1135990940
121b0a97a7
1311375932
149217d27
1560b04a4
hex41b5b2f

68901679 has 16 divisors (see below), whose sum is σ = 86169600. Its totient is φ = 53523360.

The previous prime is 68901653. The next prime is 68901713. The reversal of 68901679 is 97610986.

It is not a de Polignac number, because 68901679 - 27 = 68901551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68901379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27522 + ... + 29920.

It is an arithmetic number, because the mean of its divisors is an integer number (5385600).

Almost surely, 268901679 is an apocalyptic number.

68901679 is a deficient number, since it is larger than the sum of its proper divisors (17267921).

68901679 is a wasteful number, since it uses less digits than its factorization.

68901679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 68901679 is about 8300.7035244008. The cubic root of 68901679 is about 409.9616839069.

The spelling of 68901679 in words is "sixty-eight million, nine hundred one thousand, six hundred seventy-nine".

Divisors: 1 7 11 77 373 2399 2611 4103 16793 26389 28721 184723 894827 6263789 9843097 68901679