Base | Representation |
---|---|
bin | 1000001101100… |
… | …00110001010111 |
3 | 11210121112122111 |
4 | 10012300301113 |
5 | 120113201440 |
6 | 10500211451 |
7 | 1464324454 |
oct | 406606127 |
9 | 153545574 |
10 | 68881495 |
11 | 35977761 |
12 | 1b099b87 |
13 | 113696a7 |
14 | 921082b |
15 | 60a94ea |
hex | 41b0c57 |
68881495 has 8 divisors (see below), whose sum is σ = 83476800. Its totient is φ = 54559200.
The previous prime is 68881493. The next prime is 68881499. The reversal of 68881495 is 59418886.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 68881495 - 21 = 68881493 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68881493) 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, 67695 + ... + 68704.
It is an arithmetic number, because the mean of its divisors is an integer number (10434600).
Almost surely, 268881495 is an apocalyptic number.
68881495 is a deficient number, since it is larger than the sum of its proper divisors (14595305).
68881495 is a wasteful number, since it uses less digits than its factorization.
68881495 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 136505.
The product of its digits is 552960, while the sum is 49.
The square root of 68881495 is about 8299.4876347881. The cubic root of 68881495 is about 409.9216487202.
The spelling of 68881495 in words is "sixty-eight million, eight hundred eighty-one thousand, four hundred ninety-five".
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