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686303080 = 235101257661
BaseRepresentation
bin101000111010000…
…010011101101000
31202211101210211121
4220322002131220
52401143144310
6152033505024
723002323421
oct5072023550
91684353747
10686303080
11322444731
12171a12174
13ac254bc8
1467210648
15403b90da
hex28e82768

686303080 has 64 divisors (see below), whose sum is σ = 1567907280. Its totient is φ = 270336000.

The previous prime is 686303077. The next prime is 686303083. The reversal of 686303080 is 80303686.

It is an interprime number because it is at equal distance from previous prime (686303077) and next prime (686303083).

It can be written as a sum of positive squares in 8 ways, for example, as 682358884 + 3944196 = 26122^2 + 1986^2 .

It is not an unprimeable number, because it can be changed into a prime (686303083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037950 + ... + 1038610.

Almost surely, 2686303080 is an apocalyptic number.

It is an amenable number.

686303080 is an abundant number, since it is smaller than the sum of its proper divisors (881604200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686303080 is a wasteful number, since it uses less digits than its factorization.

686303080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 686303080 is about 26197.3868925891. The cubic root of 686303080 is about 882.0745990930.

The spelling of 686303080 in words is "six hundred eighty-six million, three hundred three thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 101 202 257 404 505 514 661 808 1010 1028 1285 1322 2020 2056 2570 2644 3305 4040 5140 5288 6610 10280 13220 25957 26440 51914 66761 103828 129785 133522 169877 207656 259570 267044 333805 339754 519140 534088 667610 679508 849385 1038280 1335220 1359016 1698770 2670440 3397540 6795080 17157577 34315154 68630308 85787885 137260616 171575770 343151540 686303080