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68174889 = 3131173473
BaseRepresentation
bin1000001000001…
…00010000101001
311202021122100220
410010010100221
5114423044024
610433120253
71455322416
oct404042051
9152248326
1068174889
1135534892
121a9b9089
131117cb93
1490a910d
155eb9e79
hex4104429

68174889 has 8 divisors (see below), whose sum is σ = 91594272. Its totient is φ = 45102720.

The previous prime is 68174819. The next prime is 68174927. The reversal of 68174889 is 98847186.

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

It is not a de Polignac number, because 68174889 - 213 = 68166697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68174819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86344 + ... + 87129.

It is an arithmetic number, because the mean of its divisors is an integer number (11449284).

Almost surely, 268174889 is an apocalyptic number.

It is an amenable number.

68174889 is a deficient number, since it is larger than the sum of its proper divisors (23419383).

68174889 is a wasteful number, since it uses less digits than its factorization.

68174889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173607.

The product of its digits is 774144, while the sum is 51.

The square root of 68174889 is about 8256.8086449911. The cubic root of 68174889 is about 408.5151305254.

The spelling of 68174889 in words is "sixty-eight million, one hundred seventy-four thousand, eight hundred eighty-nine".

Divisors: 1 3 131 393 173473 520419 22724963 68174889