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8639707466 = 213182292
BaseRepresentation
bin10000000101111011…
…10111100101001010
3211022010010121120102
420002331313211022
5120143231114331
63545150525402
7424046205335
oct100275674512
924263117512
108639707466
113733987105
121811506862
13a78c32350
145bd62961c
1535875d4cb
hex202f7794a

8639707466 has 12 divisors (see below), whose sum is σ = 13957216182. Its totient is φ = 3987338544.

The previous prime is 8639707429. The next prime is 8639707481. The reversal of 8639707466 is 6647079368.

It is a happy number.

8639707466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 8398806025 + 240901441 = 91645^2 + 15521^2 .

It is a super-2 number, since 2×86397074662 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464840 + ... + 483068.

Almost surely, 28639707466 is an apocalyptic number.

8639707466 is a deficient number, since it is larger than the sum of its proper divisors (5317508716).

8639707466 is an frugal number, since it uses more digits than its factorization.

8639707466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36473 (or 18244 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 56.

The square root of 8639707466 is about 92950.0267132829. The cubic root of 8639707466 is about 2051.9479771348.

The spelling of 8639707466 in words is "eight billion, six hundred thirty-nine million, seven hundred seven thousand, four hundred sixty-six".

Divisors: 1 2 13 26 18229 36458 236977 473954 332296441 664592882 4319853733 8639707466