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68066183 = 253126893
BaseRepresentation
bin1000000111010…
…01101110000111
311202002010020202
410003221232013
5114411104213
610430521115
71454360453
oct403515607
9152063222
1068066183
1135470149
121a96619b
1311142563
14907b663
155e97b58
hex40e9b87

68066183 has 4 divisors (see below), whose sum is σ = 68095608. Its totient is φ = 68036760.

The previous prime is 68066107. The next prime is 68066197. The reversal of 68066183 is 38166086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68066183 - 28 = 68065927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68066783) 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 3 ways as a sum of consecutive naturals, for example, 10916 + ... + 15977.

It is an arithmetic number, because the mean of its divisors is an integer number (17023902).

Almost surely, 268066183 is an apocalyptic number.

68066183 is a deficient number, since it is larger than the sum of its proper divisors (29425).

68066183 is a wasteful number, since it uses less digits than its factorization.

68066183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29424.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68066183 is about 8250.2232091017. The cubic root of 68066183 is about 408.2978869504.

The spelling of 68066183 in words is "sixty-eight million, sixty-six thousand, one hundred eighty-three".

Divisors: 1 2531 26893 68066183