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6531664717 is a prime number
BaseRepresentation
bin1100001010101000…
…10100101101001101
3121212012110221120001
412011110110231031
5101334101232332
63000044124301
7320601143164
oct60524245515
917765427501
106531664717
112851a55416
121323536691
13801289786
1445d6883db
152836580e7
hex185514b4d

6531664717 has 2 divisors, whose sum is σ = 6531664718. Its totient is φ = 6531664716.

The previous prime is 6531664687. The next prime is 6531664747. The reversal of 6531664717 is 7174661356.

It is a balanced prime because it is at equal distance from previous prime (6531664687) and next prime (6531664747).

It can be written as a sum of positive squares in only one way, i.e., 4918357161 + 1613307556 = 70131^2 + 40166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-6531664717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6531664747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265832358 + 3265832359.

It is an arithmetic number, because the mean of its divisors is an integer number (3265832359).

Almost surely, 26531664717 is an apocalyptic number.

It is an amenable number.

6531664717 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531664717 is an equidigital number, since it uses as much as digits as its factorization.

6531664717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 6531664717 is about 80818.7151407395. The cubic root of 6531664717 is about 1869.2811555449.

The spelling of 6531664717 in words is "six billion, five hundred thirty-one million, six hundred sixty-four thousand, seven hundred seventeen".