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87660027 = 32713107033
BaseRepresentation
bin1010011100110…
…01010111111011
320002221120221200
411032121113323
5134420110102
612410505243
72113045410
oct516312773
9202846850
1087660027
1145533304
1225435223
1315212b50
14b8dc107
157a6851c
hex53995fb

87660027 has 24 divisors (see below), whose sum is σ = 155841504. Its totient is φ = 46237824.

The previous prime is 87660019. The next prime is 87660031. The reversal of 87660027 is 72006678.

It is not a de Polignac number, because 87660027 - 23 = 87660019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87659973 and 87660000.

It is not an unprimeable number, because it can be changed into a prime (87660037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52698 + ... + 54335.

It is an arithmetic number, because the mean of its divisors is an integer number (6493396).

Almost surely, 287660027 is an apocalyptic number.

87660027 is a deficient number, since it is larger than the sum of its proper divisors (68181477).

87660027 is a wasteful number, since it uses less digits than its factorization.

87660027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107059 (or 107056 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 87660027 is about 9362.6933624892. The cubic root of 87660027 is about 444.2224810248. Note that the first 3 decimals are identical.

The spelling of 87660027 in words is "eighty-seven million, six hundred sixty thousand, twenty-seven".

Divisors: 1 3 7 9 13 21 39 63 91 117 273 819 107033 321099 749231 963297 1391429 2247693 4174287 6743079 9740003 12522861 29220009 87660027