| Base | Representation |
|---|---|
| bin | 100111100001100… |
| … | …100011001001000 |
| 3 | 1201012202112121120 |
| 4 | 213201210121020 |
| 5 | 2324224024430 |
| 6 | 145444435240 |
| 7 | 22301231631 |
| oct | 4741443110 |
| 9 | 1635675546 |
| 10 | 663111240 |
| 11 | 310344320 |
| 12 | 1660a8b20 |
| 13 | a74c4a1c |
| 14 | 640d4888 |
| 15 | 3d337610 |
| hex | 27864648 |
663111240 has 128 divisors (see below), whose sum is σ = 2176312320. Its totient is φ = 160300800.
The previous prime is 663111223. The next prime is 663111257. The reversal of 663111240 is 42111366.
It is an interprime number because it is at equal distance from previous prime (663111223) and next prime (663111257).
It is a super-2 number, since 2×6631112402 = 879433033228675200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 663111240.
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, 911757 + ... + 912483.
It is an arithmetic number, because the mean of its divisors is an integer number (17002440).
Almost surely, 2663111240 is an apocalyptic number.
663111240 is a gapful number since it is divisible by the number (60) 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 663111240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088156160).
663111240 is an abundant number, since it is smaller than the sum of its proper divisors (1513201080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
663111240 is a wasteful number, since it uses less digits than its factorization.
663111240 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1443 (or 1439 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 24.
The square root of 663111240 is about 25750.9463903756. The cubic root of 663111240 is about 872.0247201420.
It can be divided in two parts, 6631 and 11240, that added together give a palindrome (17871).
The spelling of 663111240 in words is "six hundred sixty-three million, one hundred eleven thousand, two hundred forty".
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