| Base | Representation |
|---|---|
| bin | 110001101000001… |
| … | …1110111110011000 |
| 3 | 11022001111020220020 |
| 4 | 1203100132332120 |
| 5 | 11402301444220 |
| 6 | 433124230440 |
| 7 | 56160344430 |
| oct | 14320367630 |
| 9 | 4261436806 |
| 10 | 1665265560 |
| 11 | 784aa9732 |
| 12 | 3a583b420 |
| 13 | 20700764a |
| 14 | 11b2432c0 |
| 15 | 9b2e2040 |
| hex | 6341ef98 |
1665265560 has 128 divisors (see below), whose sum is σ = 5806425600. Its totient is φ = 374169600.
The previous prime is 1665265543. The next prime is 1665265577. The reversal of 1665265560 is 655625661.
1665265560 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (1665265543) and next prime (1665265577).
It is a super-2 number, since 2×16652655602 = 5546218770644227200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (42).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32760 + ... + 66360.
It is an arithmetic number, because the mean of its divisors is an integer number (45362700).
Almost surely, 21665265560 is an apocalyptic number.
1665265560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1665265560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903212800).
1665265560 is an abundant number, since it is smaller than the sum of its proper divisors (4141160040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1665265560 is a wasteful number, since it uses less digits than its factorization.
1665265560 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33681 (or 33677 counting only the distinct ones).
The product of its (nonzero) digits is 324000, while the sum is 42.
The square root of 1665265560 is about 40807.6654563821. The cubic root of 1665265560 is about 1185.2987692246.
The spelling of 1665265560 in words is "one billion, six hundred sixty-five million, two hundred sixty-five thousand, five hundred sixty".
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