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68708618 = 21124112959
BaseRepresentation
bin1000001100001…
…10100100001010
311210021202111122
410012012210022
5120042133433
610452355242
71463004446
oct406064412
9153252448
1068708618
1135869890
121b015b22
1311308ab4
1491a7826
156073198
hex418690a

68708618 has 16 divisors (see below), whose sum is σ = 112907520. Its totient is φ = 31099200.

The previous prime is 68708609. The next prime is 68708641. The reversal of 68708618 is 81680786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (7056720).

Almost surely, 268708618 is an apocalyptic number.

68708618 is a deficient number, since it is larger than the sum of its proper divisors (44198902).

68708618 is a wasteful number, since it uses less digits than its factorization.

68708618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13213.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68708618 is about 8289.0661717711. The cubic root of 68708618 is about 409.5784244935.

The spelling of 68708618 in words is "sixty-eight million, seven hundred eight thousand, six hundred eighteen".

Divisors: 1 2 11 22 241 482 2651 5302 12959 25918 142549 285098 3123119 6246238 34354309 68708618