| Base | Representation |
|---|---|
| bin | 100101100101110… |
| … | …111101101111100 |
| 3 | 1121221202002112200 |
| 4 | 211211313231330 |
| 5 | 2242423401130 |
| 6 | 142325431500 |
| 7 | 21425505303 |
| oct | 4545675574 |
| 9 | 1557662480 |
| 10 | 630684540 |
| 11 | 2a40066a2 |
| 12 | 15726b590 |
| 13 | a0880325 |
| 14 | 5da9343a |
| 15 | 3a57e760 |
| hex | 25977b7c |
630684540 has 144 divisors (see below), whose sum is σ = 1972518912. Its totient is φ = 163029888.
The previous prime is 630684503. The next prime is 630684559. The reversal of 630684540 is 45486036.
630684540 is a `hidden beast` number, since 6 + 30 + 6 + 84 + 540 = 666.
630684540 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 630684495 and 630684504.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1074127 + ... + 1074713.
It is an arithmetic number, because the mean of its divisors is an integer number (13698048).
Almost surely, 2630684540 is an apocalyptic number.
630684540 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 630684540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986259456).
630684540 is an abundant number, since it is smaller than the sum of its proper divisors (1341834372).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
630684540 is a wasteful number, since it uses less digits than its factorization.
630684540 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 776 (or 771 counting only the distinct ones).
The product of its (nonzero) digits is 69120, while the sum is 36.
The square root of 630684540 is about 25113.4334570166. The cubic root of 630684540 is about 857.5722679334.
The spelling of 630684540 in words is "six hundred thirty million, six hundred eighty-four thousand, five hundred forty".
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