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109708085 = 525578581
BaseRepresentation
bin1101000101000…
…00001100110101
321122102202012102
412202200030311
5211041124320
614515231445
72501334434
oct642401465
9248382172
10109708085
1156a22343
12308a8585
1319962536
14107db11b
159971175
hex68a0335

109708085 has 8 divisors (see below), whose sum is σ = 131716536. Its totient is φ = 87721920.

The previous prime is 109708069. The next prime is 109708099. The reversal of 109708085 is 580807901.

It can be written as a sum of positive squares in 4 ways, for example, as 1069156 + 108638929 = 1034^2 + 10423^2 .

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

It is not a de Polignac number, because 109708085 - 24 = 109708069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 8495 + ... + 17075.

It is an arithmetic number, because the mean of its divisors is an integer number (16464567).

Almost surely, 2109708085 is an apocalyptic number.

It is an amenable number.

109708085 is a deficient number, since it is larger than the sum of its proper divisors (22008451).

109708085 is an equidigital number, since it uses as much as digits as its factorization.

109708085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11143.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 109708085 is about 10474.1627350352. The cubic root of 109708085 is about 478.7177655787.

The spelling of 109708085 in words is "one hundred nine million, seven hundred eight thousand, eighty-five".

Divisors: 1 5 2557 8581 12785 42905 21941617 109708085