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68175743 = 194187517
BaseRepresentation
bin1000001000001…
…00011101111111
311202021200112112
410010010131333
5114423110433
610433124235
71455325046
oct404043577
9152250475
1068175743
1135535499
121a9b967b
131118039c
1490a955d
155eba348
hex410477f

68175743 has 8 divisors (see below), whose sum is σ = 73515120. Its totient is φ = 63011520.

The previous prime is 68175733. The next prime is 68175791. The reversal of 68175743 is 34757186.

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 68175743 - 28 = 68175487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68175743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68175713) 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, 42980 + ... + 44537.

It is an arithmetic number, because the mean of its divisors is an integer number (9189390).

Almost surely, 268175743 is an apocalyptic number.

68175743 is a deficient number, since it is larger than the sum of its proper divisors (5339377).

68175743 is a wasteful number, since it uses less digits than its factorization.

68175743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87577.

The product of its digits is 141120, while the sum is 41.

The square root of 68175743 is about 8256.8603597251. The cubic root of 68175743 is about 408.5168362877.

The spelling of 68175743 in words is "sixty-eight million, one hundred seventy-five thousand, seven hundred forty-three".

Divisors: 1 19 41 779 87517 1662823 3588197 68175743