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68408206 = 261678369
BaseRepresentation
bin1000001001111…
…01001110001110
311202201111102021
410010331032032
5120003030311
610442120354
71460313556
oct404751616
9152644367
1068408206
1135684109
121aab00ba
1311232139
14912a166
156014171
hex413d38e

68408206 has 16 divisors (see below), whose sum is σ = 105863760. Its totient is φ = 33137280.

The previous prime is 68408191. The next prime is 68408239. The reversal of 68408206 is 60280486.

It is a congruent number.

It is an unprimeable number.

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, 3990 + ... + 12358.

It is an arithmetic number, because the mean of its divisors is an integer number (6616485).

Almost surely, 268408206 is an apocalyptic number.

68408206 is a deficient number, since it is larger than the sum of its proper divisors (37455554).

68408206 is a wasteful number, since it uses less digits than its factorization.

68408206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 68408206 is about 8270.9253412179. The cubic root of 68408206 is about 408.9806244969.

The spelling of 68408206 in words is "sixty-eight million, four hundred eight thousand, two hundred six".

Divisors: 1 2 61 67 122 134 4087 8174 8369 16738 510509 560723 1021018 1121446 34204103 68408206