Base | Representation |
---|---|
bin | 1010011101000… |
… | …01111100000001 |
3 | 20010000101001212 |
4 | 11032201330001 |
5 | 134422220410 |
6 | 12411335505 |
7 | 2113252601 |
oct | 516417401 |
9 | 203011055 |
10 | 87695105 |
11 | 455576a3 |
12 | 25451595 |
13 | 15225ac4 |
14 | b90ac01 |
15 | 7a73b05 |
hex | 53a1f01 |
87695105 has 8 divisors (see below), whose sum is σ = 107801064. Its totient is φ = 68444800.
The previous prime is 87695099. The next prime is 87695117. The reversal of 87695105 is 50159678.
It can be written as a sum of positive squares in 4 ways, for example, as 4648336 + 83046769 = 2156^2 + 9113^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-87695105 is a prime.
It is a super-2 number, since 2×876951052 = 15380862881922050, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (41).
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213686 + ... + 214095.
It is an arithmetic number, because the mean of its divisors is an integer number (13475133).
Almost surely, 287695105 is an apocalyptic number.
It is an amenable number.
87695105 is a deficient number, since it is larger than the sum of its proper divisors (20105959).
87695105 is a wasteful number, since it uses less digits than its factorization.
87695105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 427827.
The product of its (nonzero) digits is 75600, while the sum is 41.
The square root of 87695105 is about 9364.5664608673. The cubic root of 87695105 is about 444.2817264175.
Adding to 87695105 its sum of digits (41), we get a triangular number (87695146 = T13243).
The spelling of 87695105 in words is "eighty-seven million, six hundred ninety-five thousand, one hundred five".
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