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68171165 = 523957047
BaseRepresentation
bin1000001000000…
…11010110011101
311202021110020222
410010003112131
5114422434130
610433051125
71455305516
oct404032635
9152243228
1068171165
1135532007
121a9b6aa5
131117b28a
1490a7a0d
155eb8ce5
hex410359d

68171165 has 8 divisors (see below), whose sum is σ = 82149120. Its totient is φ = 54307792.

The previous prime is 68171161. The next prime is 68171171. The reversal of 68171165 is 56117186.

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 68171165 - 22 = 68171161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68171161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27329 + ... + 29718.

It is an arithmetic number, because the mean of its divisors is an integer number (10268640).

Almost surely, 268171165 is an apocalyptic number.

It is an amenable number.

68171165 is a deficient number, since it is larger than the sum of its proper divisors (13977955).

68171165 is a wasteful number, since it uses less digits than its factorization.

68171165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57291.

The product of its digits is 10080, while the sum is 35.

The square root of 68171165 is about 8256.5831310537. The cubic root of 68171165 is about 408.5076921168.

The spelling of 68171165 in words is "sixty-eight million, one hundred seventy-one thousand, one hundred sixty-five".

Divisors: 1 5 239 1195 57047 285235 13634233 68171165