Base | Representation |
---|---|
bin | 1000001011110… |
… | …10110110100110 |
3 | 11210012022200220 |
4 | 10011322312212 |
5 | 120034120041 |
6 | 10451345210 |
7 | 1462414545 |
oct | 405726646 |
9 | 153168626 |
10 | 68660646 |
11 | 3583683a |
12 | 1abb2206 |
13 | 112c0002 |
14 | 919415c |
15 | 6063d66 |
hex | 417ada6 |
68660646 has 8 divisors (see below), whose sum is σ = 137321304. Its totient is φ = 22886880.
The previous prime is 68660617. The next prime is 68660677. The reversal of 68660646 is 64606686.
It is a sphenic number, since it is the product of 3 distinct primes.
68660646 is an admirable number.
It is a junction number, because it is equal to n+sod(n) for n = 68660598 and 68660607.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5721715 + ... + 5721726.
It is an arithmetic number, because the mean of its divisors is an integer number (17165163).
Almost surely, 268660646 is an apocalyptic number.
68660646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68660646 is a wasteful number, since it uses less digits than its factorization.
68660646 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11443446.
The product of its (nonzero) digits is 248832, while the sum is 42.
The square root of 68660646 is about 8286.1719750437. The cubic root of 68660646 is about 409.4830804580.
The spelling of 68660646 in words is "sixty-eight million, six hundred sixty thousand, six hundred forty-six".
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