Base | Representation |
---|---|
bin | 111011000100101… |
… | …100100111010111 |
3 | 2120001220102212021 |
4 | 323010230213113 |
5 | 4012204241223 |
6 | 242202234011 |
7 | 33363046441 |
oct | 7304544727 |
9 | 2501812767 |
10 | 991087063 |
11 | 46949641a |
12 | 237ab5907 |
13 | 12a439365 |
14 | 958ab491 |
15 | 5c02065d |
hex | 3b12c9d7 |
991087063 has 24 divisors (see below), whose sum is σ = 1115024000. Its totient is φ = 878283648.
The previous prime is 991087061. The next prime is 991087067. The reversal of 991087063 is 360780199.
It is not a de Polignac number, because 991087063 - 21 = 991087061 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (991087061) 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, 1092256 + ... + 1093162.
Almost surely, 2991087063 is an apocalyptic number.
991087063 is a deficient number, since it is larger than the sum of its proper divisors (123936937).
991087063 is a wasteful number, since it uses less digits than its factorization.
991087063 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1159 (or 1142 counting only the distinct ones).
The product of its (nonzero) digits is 81648, while the sum is 43.
The square root of 991087063 is about 31481.5352706948. The cubic root of 991087063 is about 997.0201503157.
The spelling of 991087063 in words is "nine hundred ninety-one million, eighty-seven thousand, sixty-three".
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