Base | Representation |
---|---|
bin | 1010011101001… |
… | …00111111111001 |
3 | 20010001000021011 |
4 | 11032210333321 |
5 | 134423121031 |
6 | 12411513521 |
7 | 2113334260 |
oct | 516447771 |
9 | 203030234 |
10 | 87707641 |
11 | 4556605a |
12 | 254588a1 |
13 | 1522b718 |
14 | b9115d7 |
15 | 7a776b1 |
hex | 53a4ff9 |
87707641 has 8 divisors (see below), whose sum is σ = 106133760. Its totient is φ = 70755648.
The previous prime is 87707639. The next prime is 87707647. The reversal of 87707641 is 14670778.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 87707641 - 21 = 87707639 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 87707594 and 87707603.
It is not an unprimeable number, because it can be changed into a prime (87707647) 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 7 ways as a sum of consecutive naturals, for example, 368401 + ... + 368638.
It is an arithmetic number, because the mean of its divisors is an integer number (13266720).
Almost surely, 287707641 is an apocalyptic number.
It is an amenable number.
87707641 is a deficient number, since it is larger than the sum of its proper divisors (18426119).
87707641 is a wasteful number, since it uses less digits than its factorization.
87707641 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 737063.
The product of its (nonzero) digits is 65856, while the sum is 40.
The square root of 87707641 is about 9365.2357685218. The cubic root of 87707641 is about 444.3028954073.
The spelling of 87707641 in words is "eighty-seven million, seven hundred seven thousand, six hundred forty-one".
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