Base | Representation |
---|---|
bin | 1000010110000… |
… | …10000001100101 |
3 | 11212201101222001 |
4 | 10023002001211 |
5 | 120410010431 |
6 | 10540205301 |
7 | 1506665536 |
oct | 413020145 |
9 | 155641861 |
10 | 70000741 |
11 | 36571658 |
12 | 1b539831 |
13 | 1166bc75 |
14 | 942268d |
15 | 622ae61 |
hex | 42c2065 |
70000741 has 4 divisors (see below), whose sum is σ = 70017484. Its totient is φ = 69984000.
The previous prime is 70000739. The next prime is 70000771. The reversal of 70000741 is 14700007.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14700007 = 7 ⋅2100001.
It can be written as a sum of positive squares in 2 ways, for example, as 40068900 + 29931841 = 6330^2 + 5471^2 .
It is a 4-Lehmer number, since φ(70000741) divides (70000741-1)4.
It is a cyclic number.
It is not a de Polignac number, because 70000741 - 21 = 70000739 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (70000771) 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, 3781 + ... + 12421.
It is an arithmetic number, because the mean of its divisors is an integer number (17504371).
Almost surely, 270000741 is an apocalyptic number.
It is an amenable number.
70000741 is a deficient number, since it is larger than the sum of its proper divisors (16743).
70000741 is an equidigital number, since it uses as much as digits as its factorization.
70000741 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16742.
The product of its (nonzero) digits is 196, while the sum is 19.
The square root of 70000741 is about 8366.6445484435. The cubic root of 70000741 is about 412.1299842007.
Adding to 70000741 its reverse (14700007), we get a palindrome (84700748).
The spelling of 70000741 in words is "seventy million, seven hundred forty-one", and thus it is an aban number.
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