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68807793 = 334965719
BaseRepresentation
bin1000001100111…
…10110001110001
311210110210112210
410012132301301
5120103322133
610454442333
71463566545
oct406366161
9153423483
1068807793
113592734a
121b0633a9
1311341c92
1491d1a25
156092763
hex419ec71

68807793 has 8 divisors (see below), whose sum is σ = 92008000. Its totient is φ = 45739728.

The previous prime is 68807777. The next prime is 68807821. The reversal of 68807793 is 39770886.

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

It is not a de Polignac number, because 68807793 - 24 = 68807777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68807723) by changing a digit.

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, 31813 + ... + 33906.

It is an arithmetic number, because the mean of its divisors is an integer number (11501000).

Almost surely, 268807793 is an apocalyptic number.

It is an amenable number.

68807793 is a deficient number, since it is larger than the sum of its proper divisors (23200207).

68807793 is a wasteful number, since it uses less digits than its factorization.

68807793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66071.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 68807793 is about 8295.0462928184. The cubic root of 68807793 is about 409.7753935360.

The spelling of 68807793 in words is "sixty-eight million, eight hundred seven thousand, seven hundred ninety-three".

Divisors: 1 3 349 1047 65719 197157 22935931 68807793