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68162171 = 711885223
BaseRepresentation
bin1000001000000…
…01001001111011
311202020222220212
410010001021323
5114422142141
610432541335
71455240350
oct404011173
9152228825
1068162171
1135526280
121a9b184b
131117715c
1490a4627
155eb62eb
hex410127b

68162171 has 8 divisors (see below), whose sum is σ = 84981504. Its totient is φ = 53113320.

The previous prime is 68162161. The next prime is 68162183. The reversal of 68162171 is 17126186.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68162171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68162161) 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, 442535 + ... + 442688.

It is an arithmetic number, because the mean of its divisors is an integer number (10622688).

Almost surely, 268162171 is an apocalyptic number.

68162171 is a deficient number, since it is larger than the sum of its proper divisors (16819333).

68162171 is a wasteful number, since it uses less digits than its factorization.

68162171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885241.

The product of its digits is 4032, while the sum is 32.

The square root of 68162171 is about 8256.0384567903. The cubic root of 68162171 is about 408.4897261641.

The spelling of 68162171 in words is "sixty-eight million, one hundred sixty-two thousand, one hundred seventy-one".

Divisors: 1 7 11 77 885223 6196561 9737453 68162171