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68616708 = 2235718059
BaseRepresentation
bin1000001011100…
…00001000000100
311210010002102120
410011300020010
5120031213313
610450405540
71462142466
oct405601004
9153102376
1068616708
1135806826
121ab908b0
13112a6004
149182136
156055d23
hex4170204

68616708 has 12 divisors (see below), whose sum is σ = 160105680. Its totient is φ = 22872232.

The previous prime is 68616689. The next prime is 68616719. The reversal of 68616708 is 80761686.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 68616708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2859018 + ... + 2859041.

It is an arithmetic number, because the mean of its divisors is an integer number (13342140).

Almost surely, 268616708 is an apocalyptic number.

It is an amenable number.

68616708 is an abundant number, since it is smaller than the sum of its proper divisors (91488972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68616708 is a wasteful number, since it uses less digits than its factorization.

68616708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5718066 (or 5718064 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 68616708 is about 8283.5202661670. The cubic root of 68616708 is about 409.3957149978.

The spelling of 68616708 in words is "sixty-eight million, six hundred sixteen thousand, seven hundred eight".

Divisors: 1 2 3 4 6 12 5718059 11436118 17154177 22872236 34308354 68616708