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206717117 is a prime number
BaseRepresentation
bin11000101001001…
…00000010111101
3112101222022120112
430110210002331
5410404421432
632302355405
75060031545
oct1424440275
9471868515
10206717117
11a67606a2
125928bb65
1333a99829
141d650325
15132347b2
hexc5240bd

206717117 has 2 divisors, whose sum is σ = 206717118. Its totient is φ = 206717116.

The previous prime is 206717111. The next prime is 206717141. The reversal of 206717117 is 711717602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200194201 + 6522916 = 14149^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 206717117 - 26 = 206717053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206717111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103358558 + 103358559.

It is an arithmetic number, because the mean of its divisors is an integer number (103358559).

Almost surely, 2206717117 is an apocalyptic number.

It is an amenable number.

206717117 is a deficient number, since it is larger than the sum of its proper divisors (1).

206717117 is an equidigital number, since it uses as much as digits as its factorization.

206717117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4116, while the sum is 32.

The square root of 206717117 is about 14377.6603451327. The cubic root of 206717117 is about 591.2785802656.

The spelling of 206717117 in words is "two hundred six million, seven hundred seventeen thousand, one hundred seventeen".