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68706693 = 32114116927
BaseRepresentation
bin1000001100001…
…10000110000101
311210021122212100
410012012012011
5120042103233
610452342313
71462666026
oct406060605
9153248770
1068706693
11358683a0
121b014999
1311307c63
1491a6c4d
156072813
hex4186185

68706693 has 24 divisors (see below), whose sum is σ = 110912256. Its totient is φ = 40622400.

The previous prime is 68706667. The next prime is 68706697. The reversal of 68706693 is 39660786.

It is not a de Polignac number, because 68706693 - 217 = 68575621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68706697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4405 + ... + 12522.

It is an arithmetic number, because the mean of its divisors is an integer number (4621344).

Almost surely, 268706693 is an apocalyptic number.

It is an amenable number.

68706693 is a deficient number, since it is larger than the sum of its proper divisors (42205563).

68706693 is a wasteful number, since it uses less digits than its factorization.

68706693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16985 (or 16982 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 68706693 is about 8288.9500541383. The cubic root of 68706693 is about 409.5745994234.

The spelling of 68706693 in words is "sixty-eight million, seven hundred six thousand, six hundred ninety-three".

Divisors: 1 3 9 11 33 41 99 123 369 451 1353 4059 16927 50781 152343 186197 558591 694007 1675773 2082021 6246063 7634077 22902231 68706693