Base | Representation |
---|---|
bin | 1000010100011… |
… | …00010110100101 |
3 | 11212022020101211 |
4 | 10022030112211 |
5 | 120330442101 |
6 | 10531351421 |
7 | 1505061601 |
oct | 412142645 |
9 | 155266354 |
10 | 69780901 |
11 | 36431473 |
12 | 1b452571 |
13 | 115c2b98 |
14 | 93a6501 |
15 | 61d5c51 |
hex | 428c5a5 |
69780901 has 8 divisors (see below), whose sum is σ = 73532000. Its totient is φ = 66037680.
The previous prime is 69780899. The next prime is 69780923. The reversal of 69780901 is 10908796.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 69780901 - 21 = 69780899 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 (69780941) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28246 + ... + 30616.
It is an arithmetic number, because the mean of its divisors is an integer number (9191500).
Almost surely, 269780901 is an apocalyptic number.
It is an amenable number.
69780901 is a deficient number, since it is larger than the sum of its proper divisors (3751099).
69780901 is a wasteful number, since it uses less digits than its factorization.
69780901 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3939.
The product of its (nonzero) digits is 27216, while the sum is 40.
The square root of 69780901 is about 8353.4963338712. The cubic root of 69780901 is about 411.6980951126.
The spelling of 69780901 in words is "sixty-nine million, seven hundred eighty thousand, nine hundred one".
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