Base | Representation |
---|---|
bin | 101000100110010… |
… | …001111011110010 |
3 | 1202110122122212220 |
4 | 220212101323302 |
5 | 2343331423240 |
6 | 151330501510 |
7 | 22610312001 |
oct | 5046217362 |
9 | 1673578786 |
10 | 681123570 |
11 | 31a527246 |
12 | 170134896 |
13 | ab1604ca |
14 | 66662c38 |
15 | 3ebe45d0 |
hex | 28991ef2 |
681123570 has 32 divisors (see below), whose sum is σ = 1674570240. Its totient is φ = 177202560.
The previous prime is 681123563. The next prime is 681123629. The reversal of 681123570 is 75321186.
681123570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275650 + ... + 278109.
It is an arithmetic number, because the mean of its divisors is an integer number (52330320).
Almost surely, 2681123570 is an apocalyptic number.
681123570 is an abundant number, since it is smaller than the sum of its proper divisors (993446670).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
681123570 is a wasteful number, since it uses less digits than its factorization.
681123570 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 553810.
The product of its (nonzero) digits is 10080, while the sum is 33.
The square root of 681123570 is about 26098.3442003511. The cubic root of 681123570 is about 879.8499959539.
It can be divided in two parts, 6811 and 23570, that added together give a triangular number (30381 = T246).
The spelling of 681123570 in words is "six hundred eighty-one million, one hundred twenty-three thousand, five hundred seventy".
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