Base | Representation |
---|---|
bin | 1111010001101… |
… | …0010110101111 |
3 | 11110120011000020 |
4 | 3310122112233 |
5 | 112400233322 |
6 | 10205133223 |
7 | 1405411113 |
oct | 364322657 |
9 | 143504006 |
10 | 64071087 |
11 | 33191613 |
12 | 1955a213 |
13 | 10373cb2 |
14 | 871b743 |
15 | 595905c |
hex | 3d1a5af |
64071087 has 16 divisors (see below), whose sum is σ = 88026240. Its totient is φ = 41422752.
The previous prime is 64071071. The next prime is 64071187. The reversal of 64071087 is 78017046.
It is not a de Polignac number, because 64071087 - 24 = 64071071 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (64071037) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41308 + ... + 42830.
It is an arithmetic number, because the mean of its divisors is an integer number (5501640).
Almost surely, 264071087 is an apocalyptic number.
64071087 is a deficient number, since it is larger than the sum of its proper divisors (23955153).
64071087 is a wasteful number, since it uses less digits than its factorization.
64071087 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1942.
The product of its (nonzero) digits is 9408, while the sum is 33.
The square root of 64071087 is about 8004.4417044538. The cubic root of 64071087 is about 400.1480431180.
The spelling of 64071087 in words is "sixty-four million, seventy-one thousand, eighty-seven".
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