| Base | Representation |
|---|---|
| bin | 100101100101101… |
| … | …101110010010100 |
| 3 | 1121221200000202000 |
| 4 | 211211231302110 |
| 5 | 2242421100420 |
| 6 | 142324515300 |
| 7 | 21425245560 |
| oct | 4545556224 |
| 9 | 1557600660 |
| 10 | 630643860 |
| 11 | 2a3a89080 |
| 12 | 15724bb30 |
| 13 | a0867962 |
| 14 | 5da826a0 |
| 15 | 3a572690 |
| hex | 2596dc94 |
630643860 has 384 divisors, whose sum is σ = 2535321600. Its totient is φ = 126282240.
The previous prime is 630643843. The next prime is 630643879. The reversal of 630643860 is 68346036.
630643860 is a `hidden beast` number, since 6 + 3 + 0 + 643 + 8 + 6 + 0 = 666.
630643860 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.
It is a super-3 number, since 3×6306438603 (a number of 27 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1205559 + ... + 1206081.
It is an arithmetic number, because the mean of its divisors is an integer number (6602400).
Almost surely, 2630643860 is an apocalyptic number.
630643860 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 630643860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267660800).
630643860 is an abundant number, since it is smaller than the sum of its proper divisors (1904677740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
630643860 is a wasteful number, since it uses less digits than its factorization.
630643860 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 588 (or 580 counting only the distinct ones).
The product of its (nonzero) digits is 62208, while the sum is 36.
The square root of 630643860 is about 25112.6235188600. The cubic root of 630643860 is about 857.5538293492.
Adding to 630643860 its reverse (68346036), we get a palindrome (698989896).
The spelling of 630643860 in words is "six hundred thirty million, six hundred forty-three thousand, eight hundred sixty".
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