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68816607 = 3137167437
BaseRepresentation
bin1000001101000…
…00111011011111
311210111020122020
410012200323133
5120104112412
610454551223
71463634336
oct406407337
9153436566
1068816607
1135932a32
121b068513
1311345cb2
1491d4d1d
15609518c
hex41a0edf

68816607 has 8 divisors (see below), whose sum is σ = 92425776. Its totient is φ = 45542592.

The previous prime is 68816569. The next prime is 68816609. The reversal of 68816607 is 70661886.

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

It is not a de Polignac number, because 68816607 - 26 = 68816543 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68816609) 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, 83308 + ... + 84129.

It is an arithmetic number, because the mean of its divisors is an integer number (11553222).

Almost surely, 268816607 is an apocalyptic number.

68816607 is a deficient number, since it is larger than the sum of its proper divisors (23609169).

68816607 is a wasteful number, since it uses less digits than its factorization.

68816607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167577.

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

The square root of 68816607 is about 8295.5775567467. The cubic root of 68816607 is about 409.7928896459.

The spelling of 68816607 in words is "sixty-eight million, eight hundred sixteen thousand, six hundred seven".

Divisors: 1 3 137 411 167437 502311 22938869 68816607