Base | Representation |
---|---|
bin | 1011111010111… |
… | …01011111100001 |
3 | 20222011102000020 |
4 | 11331131133201 |
5 | 201044411130 |
6 | 13531144053 |
7 | 2322652245 |
oct | 575353741 |
9 | 228142006 |
10 | 99997665 |
11 | 5149a7a9 |
12 | 295a5029 |
13 | 17942721 |
14 | d3d0425 |
15 | 8ba3e10 |
hex | 5f5d7e1 |
99997665 has 16 divisors (see below), whose sum is σ = 168417600. Its totient is φ = 50524992.
The previous prime is 99997649. The next prime is 99997669. The reversal of 99997665 is 56679999.
It is not a de Polignac number, because 99997665 - 24 = 99997649 is a prime.
It is a nialpdrome in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 99997599 and 99997608.
It is not an unprimeable number, because it can be changed into a prime (99997669) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175150 + ... + 175719.
It is an arithmetic number, because the mean of its divisors is an integer number (10526100).
Almost surely, 299997665 is an apocalyptic number.
99997665 is a gapful number since it is divisible by the number (95) formed by its first and last digit.
It is an amenable number.
99997665 is a deficient number, since it is larger than the sum of its proper divisors (68419935).
99997665 is a wasteful number, since it uses less digits than its factorization.
99997665 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 350896.
The product of its digits is 8266860, while the sum is 60.
The square root of 99997665 is about 9999.8832493185. The cubic root of 99997665 is about 464.1552706298.
The spelling of 99997665 in words is "ninety-nine million, nine hundred ninety-seven thousand, six hundred sixty-five".
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