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68973705 = 3251980671
BaseRepresentation
bin1000001110001…
…11010010001001
311210210020010200
410013013102021
5120124124310
610502202413
71465160343
oct407072211
9153706120
1068973705
1135a2aa69
121b123409
131139c658
149236293
1560c69c0
hex41c7489

68973705 has 24 divisors (see below), whose sum is σ = 125848320. Its totient is φ = 34849440.

The previous prime is 68973701. The next prime is 68973721. The reversal of 68973705 is 50737986.

It is a happy number.

It is not a de Polignac number, because 68973705 - 22 = 68973701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68973701) 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 23 ways as a sum of consecutive naturals, for example, 39481 + ... + 41190.

It is an arithmetic number, because the mean of its divisors is an integer number (5243680).

Almost surely, 268973705 is an apocalyptic number.

It is an amenable number.

68973705 is a deficient number, since it is larger than the sum of its proper divisors (56874615).

68973705 is a wasteful number, since it uses less digits than its factorization.

68973705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80701 (or 80698 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 68973705 is about 8305.0409390924. The cubic root of 68973705 is about 410.1044845745.

The spelling of 68973705 in words is "sixty-eight million, nine hundred seventy-three thousand, seven hundred five".

Divisors: 1 3 5 9 15 19 45 57 95 171 285 855 80671 242013 403355 726039 1210065 1532749 3630195 4598247 7663745 13794741 22991235 68973705