Base | Representation |
---|---|
bin | 1111111110010… |
… | …1101010101001 |
3 | 11200002000002120 |
4 | 3333211222221 |
5 | 114123013001 |
6 | 10352021453 |
7 | 1442333124 |
oct | 377455251 |
9 | 150060076 |
10 | 67001001 |
11 | 34902931 |
12 | 1a531889 |
13 | 10b5b782 |
14 | 8c813bb |
15 | 5d37236 |
hex | 3fe5aa9 |
67001001 has 8 divisors (see below), whose sum is σ = 93218880. Its totient is φ = 42725232.
The previous prime is 67000993. The next prime is 67001017. The reversal of 67001001 is 10010076.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 67001001 - 23 = 67000993 is a prime.
67001001 is a modest number, since divided by 1001 gives 67 as remainder.
It is not an unprimeable number, because it can be changed into a prime (67001801) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485446 + ... + 485583.
It is an arithmetic number, because the mean of its divisors is an integer number (11652360).
Almost surely, 267001001 is an apocalyptic number.
It is an amenable number.
67001001 is a deficient number, since it is larger than the sum of its proper divisors (26217879).
67001001 is a wasteful number, since it uses less digits than its factorization.
67001001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 971055.
The product of its (nonzero) digits is 42, while the sum is 15.
The square root of 67001001 is about 8185.4139174510. The cubic root of 67001001 is about 406.1568327259.
Adding to 67001001 its reverse (10010076), we get a palindrome (77011077).
It can be divided in two parts, 6 and 7001001, that added together give a palindrome (7001007).
The spelling of 67001001 in words is "sixty-seven million, one thousand, one".
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