Base | Representation |
---|---|
bin | 100110101000001… |
… | …101011100101001 |
3 | 1200011110121211121 |
4 | 212220031130221 |
5 | 2311401400144 |
6 | 144150255241 |
7 | 22026355426 |
oct | 4650153451 |
9 | 1604417747 |
10 | 648075049 |
11 | 302904416 |
12 | 161057521 |
13 | a435ba7b |
14 | 620dcd4d |
15 | 3bd67384 |
hex | 26a0d729 |
648075049 has 8 divisors (see below), whose sum is σ = 652860000. Its totient is φ = 643303392.
The previous prime is 648075023. The next prime is 648075079. The reversal of 648075049 is 940570846.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 648075049 - 223 = 639686441 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 648074996 and 648075014.
It is not an unprimeable number, because it can be changed into a prime (648075079) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107877 + ... + 113725.
It is an arithmetic number, because the mean of its divisors is an integer number (81607500).
Almost surely, 2648075049 is an apocalyptic number.
It is an amenable number.
648075049 is a deficient number, since it is larger than the sum of its proper divisors (4784951).
648075049 is a wasteful number, since it uses less digits than its factorization.
648075049 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6647.
The product of its (nonzero) digits is 241920, while the sum is 43.
The square root of 648075049 is about 25457.3181816153. The cubic root of 648075049 is about 865.3831481133.
The spelling of 648075049 in words is "six hundred forty-eight million, seventy-five thousand, forty-nine".
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