Base | Representation |
---|---|
bin | 1000001011111… |
… | …01100011111101 |
3 | 11210012212220211 |
4 | 10011331203331 |
5 | 120034443431 |
6 | 10451512421 |
7 | 1462462105 |
oct | 405754375 |
9 | 153185824 |
10 | 68671741 |
11 | 35844106 |
12 | 1abb8711 |
13 | 112c5088 |
14 | 9198205 |
15 | 60672b1 |
hex | 417d8fd |
68671741 has 4 divisors (see below), whose sum is σ = 70527772. Its totient is φ = 66815712.
The previous prime is 68671723. The next prime is 68671753. The reversal of 68671741 is 14717686.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14717686 = 2 ⋅7358843.
It can be written as a sum of positive squares in 2 ways, for example, as 45832900 + 22838841 = 6770^2 + 4779^2 .
It is a cyclic number.
It is not a de Polignac number, because 68671741 - 25 = 68671709 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 68671694 and 68671703.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68671781) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927960 + ... + 928033.
It is an arithmetic number, because the mean of its divisors is an integer number (17631943).
Almost surely, 268671741 is an apocalyptic number.
It is an amenable number.
68671741 is a deficient number, since it is larger than the sum of its proper divisors (1856031).
68671741 is a wasteful number, since it uses less digits than its factorization.
68671741 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1856030.
The product of its digits is 56448, while the sum is 40.
The square root of 68671741 is about 8286.8414368805. The cubic root of 68671741 is about 409.5051356446.
It can be divided in two parts, 686 and 71741, that added together give a palindrome (72427).
The spelling of 68671741 in words is "sixty-eight million, six hundred seventy-one thousand, seven hundred forty-one".
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