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6730287668 = 2213420130809
BaseRepresentation
bin1100100010010100…
…00000101000110100
3122101001020001000122
412101022000220310
5102240423201133
63031501231112
7325532333636
oct62112005064
918331201018
106730287668
112944087815
121379b62498
13833481050
1447bbcca56
15295cde498
hex191280a34

6730287668 has 24 divisors (see below), whose sum is σ = 12687434760. Its totient is φ = 3105446400.

The previous prime is 6730287667. The next prime is 6730287671. The reversal of 6730287668 is 8667820376.

It can be written as a sum of positive squares in 4 ways, for example, as 91623184 + 6638664484 = 9572^2 + 81478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6730287661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203048 + ... + 233856.

It is an arithmetic number, because the mean of its divisors is an integer number (528643115).

Almost surely, 26730287668 is an apocalyptic number.

It is an amenable number.

6730287668 is a deficient number, since it is larger than the sum of its proper divisors (5957147092).

6730287668 is a wasteful number, since it uses less digits than its factorization.

6730287668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35027 (or 35025 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The square root of 6730287668 is about 82038.3304803310. The cubic root of 6730287668 is about 1888.0400787031.

The spelling of 6730287668 in words is "six billion, seven hundred thirty million, two hundred eighty-seven thousand, six hundred sixty-eight".

Divisors: 1 2 4 13 26 52 4201 8402 16804 30809 54613 61618 109226 123236 218452 400517 801034 1602068 129428609 258857218 517714436 1682571917 3365143834 6730287668