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68551307 = 117385369
BaseRepresentation
bin1000001011000…
…00001010001011
311202222202201022
410011200022023
5120022120212
610445143055
71461451016
oct405401213
9152882638
1068551307
1135771680
121ab5aa8b
1311282306
14916637d
156041772
hex416028b

68551307 has 8 divisors (see below), whose sum is σ = 75808560. Its totient is φ = 61464960.

The previous prime is 68551283. The next prime is 68551309. The reversal of 68551307 is 70315586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68551307 - 26 = 68551243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68551309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41882 + ... + 43487.

It is an arithmetic number, because the mean of its divisors is an integer number (9476070).

Almost surely, 268551307 is an apocalyptic number.

68551307 is a deficient number, since it is larger than the sum of its proper divisors (7257253).

68551307 is a wasteful number, since it uses less digits than its factorization.

68551307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85453.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 68551307 is about 8279.5716676649. The cubic root of 68551307 is about 409.2656038284.

The spelling of 68551307 in words is "sixty-eight million, five hundred fifty-one thousand, three hundred seven".

Divisors: 1 11 73 803 85369 939059 6231937 68551307