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68505183 = 34978719
BaseRepresentation
bin1000001010101…
…00111001011111
311202220102110000
410011110321133
5120014131213
610444145343
71461166365
oct405247137
9152812400
1068505183
113573aa5a
121ab38253
1311267316
149153635
156032c73
hex4154e5f

68505183 has 20 divisors (see below), whose sum is σ = 103401760. Its totient is φ = 45194112.

The previous prime is 68505119. The next prime is 68505187. The reversal of 68505183 is 38150586.

It is not a de Polignac number, because 68505183 - 26 = 68505119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68505187) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3498 + ... + 12216.

It is an arithmetic number, because the mean of its divisors is an integer number (5170088).

Almost surely, 268505183 is an apocalyptic number.

68505183 is a deficient number, since it is larger than the sum of its proper divisors (34896577).

68505183 is an equidigital number, since it uses as much as digits as its factorization.

68505183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8828 (or 8819 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 68505183 is about 8276.7857891817. The cubic root of 68505183 is about 409.1737932667.

The spelling of 68505183 in words is "sixty-eight million, five hundred five thousand, one hundred eighty-three".

Divisors: 1 3 9 27 81 97 291 873 2619 7857 8719 26157 78471 235413 706239 845743 2537229 7611687 22835061 68505183