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68230719 = 3223329617
BaseRepresentation
bin1000001000100…
…01111000111111
311202101110221200
410010101320333
5114431340334
610434230543
71455644244
oct404217077
9152343850
1068230719
1135572827
121aa25453
131119c40b
1490c15cb
155ecb799
hex4111e3f

68230719 has 12 divisors (see below), whose sum is σ = 102840816. Its totient is φ = 43509312.

The previous prime is 68230717. The next prime is 68230751. The reversal of 68230719 is 91703286.

It is not a de Polignac number, because 68230719 - 21 = 68230717 is a prime.

It is a super-2 number, since 2×682307192 = 9310862030513922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68230717) 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 11 ways as a sum of consecutive naturals, for example, 164602 + ... + 165015.

It is an arithmetic number, because the mean of its divisors is an integer number (8570068).

Almost surely, 268230719 is an apocalyptic number.

68230719 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

68230719 is a deficient number, since it is larger than the sum of its proper divisors (34610097).

68230719 is a wasteful number, since it uses less digits than its factorization.

68230719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329646 (or 329643 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 68230719 is about 8260.1887992951. The cubic root of 68230719 is about 408.6266142748.

The spelling of 68230719 in words is "sixty-eight million, two hundred thirty thousand, seven hundred nineteen".

Divisors: 1 3 9 23 69 207 329617 988851 2966553 7581191 22743573 68230719