Base | Representation |
---|---|
bin | 100111011010101… |
… | …011111010000010 |
3 | 1201002100212200020 |
4 | 213122223322002 |
5 | 2323243311020 |
6 | 145342034310 |
7 | 22250005530 |
oct | 4732537202 |
9 | 1632325606 |
10 | 661307010 |
11 | 30a321821 |
12 | 165578996 |
13 | a7012730 |
14 | 63b85150 |
15 | 3d0ccc40 |
hex | 276abe82 |
661307010 has 128 divisors (see below), whose sum is σ = 2020999680. Its totient is φ = 134701056.
The previous prime is 661306991. The next prime is 661307029. The reversal of 661307010 is 10703166.
It is an interprime number because it is at equal distance from previous prime (661306991) and next prime (661307029).
It is a super-2 number, since 2×6613070102 = 874653922950280200, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74994 + ... + 83346.
It is an arithmetic number, because the mean of its divisors is an integer number (15789060).
Almost surely, 2661307010 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 661307010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010499840).
661307010 is an abundant number, since it is smaller than the sum of its proper divisors (1359692670).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
661307010 is a wasteful number, since it uses less digits than its factorization.
661307010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8412.
The product of its (nonzero) digits is 756, while the sum is 24.
The square root of 661307010 is about 25715.8902237508. The cubic root of 661307010 is about 871.2331172835.
The spelling of 661307010 in words is "six hundred sixty-one million, three hundred seven thousand, ten".
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